( 2 + 5 ) 2 \left(2+\sqrt{5}\right)^{2\ }\ \ ( 2 + 5 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> ) 2 มีค่าเท่ากับข้อใด

9 + 4 5 9+4\sqrt{5} 9 + 4 5 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

20 5 20\sqrt{5} 2 0 5 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

4 + 5 4+\sqrt{5} 4 + 5 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

13 + 4 5 13\ +\ 4\sqrt{5} 1 3 + 4 5 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

180 ⋅ 8 − 50 ⋅ 20 \sqrt{180}\ \cdot\ \sqrt{8}\ -\ \sqrt{50}\cdot\ \sqrt{20}\ \ 1 8 0 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> ⋅ 8 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> − 5 0 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> ⋅ 2 0 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> มีค่าเท่ากับข้อใด

2 10 2\sqrt{10} 2 1 0 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

2 10 5 \frac{2\sqrt{10}}{5} 5 2 1 0 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

10 2 10\sqrt{2} 1 0 2 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

5 10 2 \frac{5\sqrt{10}}{2} 2 5 1 0 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

20 − 45 + 80 ม ี ค ่ า เ ท ่ า ก ั บ ข ้ อ ใ ด \sqrt{20\ }-\ \sqrt{45}\ +\sqrt{80}\ \ มีค่าเท่ากับข้อใด 2 0 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> − 4 5 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> + 8 0 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> ม ี ค ่ า เ ท ่ า ก ั บ ข ้ อ ใ ด

3 5 3\sqrt{5} 3 5 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

5 + 3 \sqrt{5\ }\ +\ 3 5 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> + 3

4 5 4\sqrt{5} 4 5 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

5 5 5\sqrt{5} 5 5 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

แบบทดสอบเลขยกกำลัง ม.5

Authored by พงษ์สุภา ธูปเทียน

Mathematics

11th Grade

Used 192+ times

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12 questions

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

ข้อใดต่อไปนี้ ถูกต้อง เมื่อกำหนดให้ $a\ne0\ ,\ b\ne0\ ,\ c\ne0$ และ n เป็นจำนวนเต็มที่มากกว่า 0

$\frac{1}{a^m}\times\ \frac{1}{a^n}\ =\ a^{m-n}$

$\left(a+b\right)^0\ +\ ab\ =\ ab$

$\left(a-b\right)^n\ =\ a^{n\ }-\ b^n$

$\left(\frac{a}{bc}\right)^{-n}\ =\frac{b^nc^n}{a^n}\$

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

$\left(2x^3\right)^2\left(3x^4\right)^3$ มีค่าตรงกับข้อใด

$5x^{12}$

$6x^{12}$

$5x^{18}$

$6x^{18}$

MULTIPLE CHOICE QUESTION

1 min • 1 pt

$\frac{9\cdot3^{-2}}{2^3\cdot8^{-1}}$ มีค่าเท่ากับข้อใด

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

$\frac{3\times2^{n+1}\ -\ 4\times2^{n-2}}{2^n\ -\ 2^{n-1}}$ มีค่าตรงกับข้อใด

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

ค่าของ $\left(2^2\right)^3\$ น้อยกว่า $2^{3^2}$ อยู่เท่าใด

448

320

168

128

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

$\left(2+\sqrt{5}\right)^{2\ }\ \$ มีค่าเท่ากับข้อใด

$20\sqrt{5}$

$4+\sqrt{5}$

$9+4\sqrt{5}$

$13\ +\ 4\sqrt{5}$

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

ข้อใดต่อไปนี้เป็นจริง
a. รากที่ 3 ของ -125 คือ -5
b. รากที่ 6 ของ 0 คือ 0
c. รากที่ 4 ของ -81 คือ 3 และ -3

ข้อ a และ c ถูก

ข้อ a และ b ถูก

ข้อ b และ c ถูก

ข้อ a , b , c ถูก

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

$\sqrt{180}\ \cdot\ \sqrt{8}\ -\ \sqrt{50}\cdot\ \sqrt{20}\ \$ มีค่าเท่ากับข้อใด

$\frac{2\sqrt{10}}{5}$

$2\sqrt{10}$

$10\sqrt{2}$

$\frac{5\sqrt{10}}{2}$

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

$\sqrt{20\ }-\ \sqrt{45}\ +\sqrt{80}\ \ มีค่าเท่ากับข้อใด$

$\sqrt{5\ }\ +\ 3$

$3\sqrt{5}$

$4\sqrt{5}$

$5\sqrt{5}$

10.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

ข้อใดต่อไปนี้ ไม่ถูกต้อง

$\left(x^{\frac{4}{5}}\right)^{10}\ \ =\ x^8$

$\left(3^{\frac{7}{6}}\right)^{\frac{3}{7}\ }\ =\ \sqrt{3}$

$\left(3^{\frac{3}{4}}\right)^3\ \ =\ 27$

$\left(5^6\right)^{\frac{2}{3}}\ =\ 625$

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แบบทดสอบเลขยกกำลัง ม.5

ข้อใดต่อไปนี้ ถูกต้อง เมื่อกำหนดให้ a≠0 , b≠0 , c≠0a\ne0\ ,\ b\ne0\ ,\ c\ne0a​=0 , b​=0 , c​=0 และ n เป็นจำนวนเต็มที่มากกว่า 0

(2x3)2(3x4)3\left(2x^3\right)^2\left(3x^4\right)^3(2x3)2(3x4)3 มีค่าตรงกับข้อใด

9⋅3−223⋅8−1\frac{9\cdot3^{-2}}{2^3\cdot8^{-1}}23⋅8−19⋅3−2​ มีค่าเท่ากับข้อใด

3×2n+1 − 4×2n−22n − 2n−1\frac{3\times2^{n+1}\ -\ 4\times2^{n-2}}{2^n\ -\ 2^{n-1}}2n − 2n−13×2n+1 − 4×2n−2​ มีค่าตรงกับข้อใด

ค่าของ (22)3 \left(2^2\right)^3\ (22)3 น้อยกว่า 2322^{3^2}232 อยู่เท่าใด

(2+5)2 \left(2+\sqrt{5}\right)^{2\ }\ \ (2+5​)2 มีค่าเท่ากับข้อใด

ข้อใดต่อไปนี้เป็นจริงa. รากที่ 3 ของ -125 คือ -5b. รากที่ 6 ของ 0 คือ 0c. รากที่ 4 ของ -81 คือ 3 และ -3

180 ⋅ 8 − 50⋅ 20 \sqrt{180}\ \cdot\ \sqrt{8}\ -\ \sqrt{50}\cdot\ \sqrt{20}\ \ 180​ ⋅ 8​ − 50​⋅ 20​ มีค่าเท่ากับข้อใด

20 − 45 +80 มีค่าเท่ากับข้อใด\sqrt{20\ }-\ \sqrt{45}\ +\sqrt{80}\ \ มีค่าเท่ากับข้อใด20 ​− 45​ +80​ มีค่าเท่ากับข้อใด

ข้อใดต่อไปนี้ ไม่ถูกต้อง

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ข้อใดต่อไปนี้ ถูกต้อง เมื่อกำหนดให้ $a\ne0\ ,\ b\ne0\ ,\ c\ne0$ และ n เป็นจำนวนเต็มที่มากกว่า 0

$\left(2x^3\right)^2\left(3x^4\right)^3$ มีค่าตรงกับข้อใด

$\frac{9\cdot3^{-2}}{2^3\cdot8^{-1}}$ มีค่าเท่ากับข้อใด

$\frac{3\times2^{n+1}\ -\ 4\times2^{n-2}}{2^n\ -\ 2^{n-1}}$ มีค่าตรงกับข้อใด

ค่าของ $\left(2^2\right)^3\$ น้อยกว่า $2^{3^2}$ อยู่เท่าใด

$\left(2+\sqrt{5}\right)^{2\ }\ \$ มีค่าเท่ากับข้อใด

ข้อใดต่อไปนี้เป็นจริง
a. รากที่ 3 ของ -125 คือ -5
b. รากที่ 6 ของ 0 คือ 0
c. รากที่ 4 ของ -81 คือ 3 และ -3

$\sqrt{180}\ \cdot\ \sqrt{8}\ -\ \sqrt{50}\cdot\ \sqrt{20}\ \$ มีค่าเท่ากับข้อใด

$\sqrt{20\ }-\ \sqrt{45}\ +\sqrt{80}\ \ มีค่าเท่ากับข้อใด$