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CỘNG, TRỪ PHÂN THỨC

Authored by Lâm Cao Thanh

Mathematics

3rd Grade

CCSS covered

Used 20+ times

CỘNG, TRỪ PHÂN THỨC
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16 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Kết quả phép cộng 6x+14+−9−2x4\frac{6x+1}{4}+\frac{-9-2x}{4}   là:

2-x

-2- x

x-2

x+2

Tags

CCSS.HSA.APR.D.7

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A=x2−10x−3+1x−3A=\frac{x^2-10}{x-3}+\frac{1}{x-3}   Tìm ĐKXĐ của A

x =3

x = -3

x≠−3x\ne-3  

3≠x3\ne x  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A=x2−10x−3+1x−3A=\frac{x^2-10}{x-3}+\frac{1}{x-3}   rút gọn có kết quả

A=x−3A=x-3  

A=x+3A=x+3  

A=x2−9A=x^2-9  

A=−92x−6A=\frac{-9}{2x-6}  

Tags

CCSS.HSA.APR.D.7

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

M=x2−10x−3+1x−3M=\frac{x^2-10}{x-3}+\frac{1}{x-3}   có giá trị bằng bao nhiêu khi x=2022

M=2025

M=2024

M=2023

M=2022

Tags

CCSS.6.EE.A.2C

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A=12x+3+4x2−12xx2−9A=\frac{12}{x+3}+\frac{4x^2-12x}{x^2-9}   để A có nghĩa thì

x≠3x\ne3  

x≠−3x\ne-3  

x=3 hoặc x=−3x=3\ hoặc\ x=-3  

x≠3 vaˋ x≠−3x\ne3\ và\ x\ne-3  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A=12x+3+4x2−12xx2−9A=\frac{12}{x+3}+\frac{4x^2-12x}{x^2-9}   mẫu thức chung của hai phân thức là

x+3x+3  

x−3x-3  

(x+3)(x−3)\left(x+3\right)\left(x-3\right)  

(x+3)−(x−3)\left(x+3\right)-\left(x-3\right)  

Tags

CCSS.HSA.APR.D.7

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

A=12x+3+4x2−12xx2−9A=\frac{12}{x+3}+\frac{4x^2-12x}{x^2-9}   rút gọn phân thức ta được:

M=4M=4  

  M=5M=5  

M=6M=6  

M=3M=3  

Tags

CCSS.HSA.APR.D.6

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