Toàn 8

Toàn 8

8th Grade

18 Qs

quiz-placeholder

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Toàn 8

Toàn 8

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Hard

Created by

Thủy Nguyễn

Used 180+ times

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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Nghiệm của phương trình 6x5=26x-5=2  là:

 56\frac{5}{6}  

 76\frac{7}{6}  

 56\frac{-5}{6}  

 76\frac{-7}{6}  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Để phương trình (m2)x+5=3\left(m-2\right)x+5=-3  là phương trình bậc nhất một ẩn thì:


 m0m\ne0  

 m2m\ne2  

 m1m\ne1  

 mRm\in R  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Giải phương trình 2(x2)+3=12(x+1)2\left(x-2\right)+3=1-2\left(x+1\right)  được kết quả là:


Vô nghiệm

 x=0x=0  

 x=2x=2  

Nghiệm đúng với mọi x

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Phương trình 2x12=2x+1412x82x-\frac{1}{2}=\frac{2x+1}{4}-\frac{1-2x}{8}  có nghiệm duy nhất là:


 x=12x=\frac{1}{2}  

 x=32x=\frac{3}{2}  

 x=52x=\frac{5}{2}  

 x=72x=\frac{7}{2}  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Phương trình 3x(2x3)=7(2x3)3x\left(2x-3\right)=7\left(2x-3\right)  có tập nghiệm là:


 S={73;32}S=\left\{\frac{7}{3};\frac{3}{2}\right\}  

 S={73;32}S=\left\{\frac{-7}{3};\frac{3}{2}\right\}  

 S={73}S=\left\{-\frac{7}{3}\right\}  

 S={73}S=\left\{\frac{7}{3}\right\}  

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Phương trình x29x+20=0x^2-9x+20=0  có tập nghiệm là:


 S={4;5}S=\left\{4;5\right\}  

 S={3;4}S=\left\{3;4\right\}  

 S={2;3}S=\left\{2;3\right\}  

 S={1;2}S=\left\{1;2\right\}  

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Phương trình (x+1)(2x)=0\left(x+1\right)\left(2-x\right)=0  có tập nghiệm là:


 S={1;2}S=\left\{1;2\right\}  

 S={1;2}S=\left\{1;-2\right\}  

 S={2}S=\left\{2\right\}  

 S={1;2}S=\left\{-1;2\right\}  

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