Bien doi bieu thuc  can bac hai

Bien doi bieu thuc can bac hai

9th Grade

10 Qs

quiz-placeholder

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Bien doi bieu thuc  can bac hai

Bien doi bieu thuc can bac hai

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Medium

Created by

Vũ Anh

Used 20+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 3x6\sqrt{3x-6}  xác định khi

 x2x\ne2  

 x2x\ne-2  

 x3x\ne3  

 x=3x=3  

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 32x72\sqrt{\frac{3}{2}x-\frac{7}{2}}  xác định khi

 x37x\ne\frac{3}{7}  

 x73x\ne\frac{7}{3}  

 x214x\ne\frac{21}{4}  

 x=73x=\frac{7}{3}  

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Dùng máy tính cầm tay rút gọn biểu thức 35+20+53\sqrt{5}+\sqrt{20}+\sqrt{5}  có kết quả là

 5\sqrt{5}  

 10\sqrt{10}  

 656\sqrt{5}  

 565\sqrt{6}  

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Khử mẫu của biểu thức lấy căn của 23\sqrt{\frac{2}{3}}  là

 36\frac{\sqrt{3}}{6}  

 23\frac{2}{3}  

 33\frac{\sqrt{3}}{3}  

 63\frac{\sqrt{6}}{3}  

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 7+43\sqrt{7+4\sqrt{3}}  rút gọn bằng

 7+237+2\sqrt{3}  

 4+34+\sqrt{3}  

 2+32+\sqrt{3}  

 7+37+\sqrt{3}  

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Tìm x biết: 3.x2=12\sqrt{3}.x^2=\sqrt{12}


x = 4

x = 2

x=±4x=\pm4

x=±2x=\pm2

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 525\frac{5}{2\sqrt{5}}  khi trục căn thức mẫu là

 55\frac{\sqrt{5}}{5}  

 52\frac{\sqrt{5}}{2}  

 52\frac{5}{2}  

 12\frac{1}{2}  

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