5 . 20 = ? \sqrt{5}.\sqrt{20}=? 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 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 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">

Chỉ ra khẳng định sai trong các khẳng định sau:

Số 1 có căn bậc hai số học là -1.

Số 1 có hai căn bậc hai là 1 và -1.

Số 0 có căn bậc hai là 0.

Số 1 có căn bậc hai số học là 1.

3 − 2 x \sqrt{3-2x} 3 − 2 x <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"> xác định khi và chỉ khi

x ≤ 3 2 x\le\frac{3}{2} x ≤ 2 3

x ≥ 3 2 x\ge\frac{3}{2} x ≥ 2 3

Kết quả phép tính 9 − 4 5 \sqrt{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"> <path d="M1001,80H400000v40H1013.1s-83.4,268,-264.1,840c-180.7, 572,-277,876.3,-289,913c-4.7,4.7,-12.7,7,-24,7s-12,0,-12,0c-1.3,-3.3,-3.7,-11.7, -7,-25c-35.3,-125.3,-106.7,-373.3,-214,-744c-10,12,-21,25,-33,39s-32,39,-32,39 c-6,-5.3,-15,-14,-27,-26s25,-30,25,-30c26.7,-32.7,52,-63,76,-91s52,-60,52,-60 s208,722,208,722c56,-175.3,126.3,-397.3,211,-666c84.7,-268.7,153.8,-488.2,207.5, -658.5c53.7,-170.3,84.5,-266.8,92.5,-289.5c4,-6.7,10,-10,18,-10z M1001 80H400000v40H1013z"> là

5 − 2 \sqrt{5}-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

3 − 2 5 3-2\sqrt{5} 3 − 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 − 5 2-\sqrt{5} 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">

Tìm câu trả lời sai:

√(ab)=√a.√b với mọi a,b

√(ab)=√a.√b với mọi a,b≥0

√(ab)=√a.√b với mọi a,b>0

√(ab)=√(-a).√(-b) với mọi a,b<0

Liên hệ giữa nhân quyền và phương pháp khai thác Bài kiểm tra

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

$\sqrt{16.25.9}=?$

60

120

180

360

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

$\sqrt{14,4\ .\ 90}=?$

3,6

36

0,36

360

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

$\sqrt{810\ .\ 40}=?$

18

1800

360

180

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

$\sqrt{5}.\sqrt{20}=?$

100

10

$4\sqrt{5}$

25

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

$\sqrt{1,3}.\sqrt{52}.\sqrt{10}=?$

25,92

52

13

26

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

$\left(\sqrt{5}\right)^2=?$

25

10

5

2,5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Với $a\ge0$ thì $\sqrt{3a}.\sqrt{27a}=?$

$9a^2$

$81a$

$9a$

$-18a$

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Với $a\ge0,\ b\ge0$ thì $\sqrt{2a.32ab^2}=\ ?$

$-8ab$

$8\left|a\right|.\left|b\right|$

$8ab$

$8a^2b^2$

10.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

$\sqrt{3-2x}$ xác định khi và chỉ khi

$x>\frac{3}{2}$

$x<\frac{3}{2}$

$x\ge\frac{3}{2}$

$x\le\frac{3}{2}$

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Continue with Google

Continue with Email

Continue with Microsoft

or continue with

Facebook

Apple

Others

By signing up, you agree to our Terms of Service & Privacy Policy

Already have an account?

Similar Resources on Wayground

20 questions

Thử thách Toán Tuần 11

Quiz

•

5th Grade - University

20 questions

Quiz de fin d'année pour les 3e

Quiz

•

9th Grade

20 questions

Bangun ruang sisi lengkung

Quiz

•

9th Grade

20 questions

Soal TPA Matematika Kelas 8A

Quiz

•

8th - 11th Grade

20 questions

LATIHAN SOAL KOMPETISI SAINS NASIONAL MATEMATIKA SD

Quiz

•

1st - 12th Grade

15 questions

Year 10 Solving Equations

Quiz

•

9th - 11th Grade

15 questions

Đối sánh vị trí của đường thẳng và đường tròn

Quiz

•

9th Grade

20 questions

Me divierto con las Matemáticas LILEGRE 8° y 9° 2020.

Quiz

•

1st Grade - University

Popular Resources on Wayground

10 questions

How much do you know about our Portrait of an Eagle?

Quiz

•

10th Grade

10 questions

Fast Food Slogans

Quiz

•

6th - 8th Grade

21 questions

Continents and Oceans

Quiz

•

6th Grade

20 questions

Parts of Speech

Quiz

•

5th Grade

16 questions

Subject & Predicate

Quiz

•

5th Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

12 questions

Map Skills

Quiz

•

3rd Grade

22 questions

Continents and Oceans

Quiz

•

5th Grade

Discover more resources for Mathematics

20 questions

Graphing Inequalities on a Number Line

Quiz

•

6th - 9th Grade

10 questions

Translating Algebraic Expressions

Quiz

•

9th Grade

20 questions

Exponent Rules

Quiz

•

8th - 9th Grade

20 questions

Function or Not a Function

Quiz

•

8th - 9th Grade

10 questions

Literal Equations

Quiz

•

9th Grade

18 questions

Discrete Vs. Continuous Practice

Quiz

•

9th Grade

10 questions

Solving Absolute Value Equations

Quiz

•

9th Grade

10 questions

Identifying equations

Quiz

•

KG - University

Liên hệ giữa nhân quyền và phương pháp khai thác

16.25.9=?\sqrt{16.25.9}=?16.25.9​=?

14,4 . 90=?\sqrt{14,4\ .\ 90}=?14,4 . 90​=?

810 . 40=?\sqrt{810\ .\ 40}=?810 . 40​=?

5.20=?\sqrt{5}.\sqrt{20}=?5​.20​=?

1,3.52.10=?\sqrt{1,3}.\sqrt{52}.\sqrt{10}=?1,3​.52​.10​=?

(5)2=?\left(\sqrt{5}\right)^2=?(5​)2=?

Với a≥0a\ge0a≥0 thì 3a.27a=?\sqrt{3a}.\sqrt{27a}=?3a​.27a​=?

Với a≥0, b≥0a\ge0,\ b\ge0a≥0, b≥0 thì 2a.32ab2= ?\sqrt{2a.32ab^2}=\ ?2a.32ab2​= ?

Chỉ ra khẳng định sai trong các khẳng định sau:

3−2x\sqrt{3-2x}3−2x​ xác định khi và chỉ khi

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics

$\sqrt{16.25.9}=?$

$\sqrt{14,4\ .\ 90}=?$

$\sqrt{810\ .\ 40}=?$

$\sqrt{5}.\sqrt{20}=?$

$\sqrt{1,3}.\sqrt{52}.\sqrt{10}=?$

$\left(\sqrt{5}\right)^2=?$

Với $a\ge0$ thì $\sqrt{3a}.\sqrt{27a}=?$

Với $a\ge0,\ b\ge0$ thì $\sqrt{2a.32ab^2}=\ ?$

$\sqrt{3-2x}$ xác định khi và chỉ khi