Search Header Logo

toán 8 chương I

Authored by Luu Hanh

Mathematics

8th Grade

Used 120+ times

toán 8 chương I
AI

AI Actions

Add similar questions

Adjust reading levels

Convert to real-world scenario

Translate activity

More...

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 (2x3−3xy+12).(−16xy)\left(2x^3-3xy+12\right).\left(-\frac{1}{6}xy\right)  bằng:

 −13x4y+12x2y2−2xy-\frac{1}{3}x^4y+\frac{1}{2}x^2y^2-2xy^{ }  

 −13x4y+12x2y2+2xy2-\frac{1}{3}x^4y+\frac{1}{2}x^2y^2+2xy^2  

 −13x4y+12x2y2−2x2y3-\frac{1}{3}x^4y+\frac{1}{2}x^2y^2-2x^2y^3  

 −13x4y+12x2y2−2x2y-\frac{1}{3}x^4y+\frac{1}{2}x^2y^2-2x^2y  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Tıˊch của đa thức 4x5+7x2 vaˋ  đơn thức −3x3 laˋTích\ của\ đa\ thức\ 4x^5+7x^2\ và\ \ đơn\ thức\ -3x^3\ là  

 12x8+21x512x^8+21x^5  

 −12x8+21x5-12x^8+21x^5  

 12x8−21x512x^8-21x^5  

 −12x8−21x5-12x^8-21x^5  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Tıˊch của đơn thức x2 vaˋ  đa thức 5x3−x−12  laˋTích\ của\ đơn\ thức\ x^2\ và\ \ đa\ thức\ 5x^3-x-\frac{1}{2}\ \ là  

 5x6+x3−12x25x^6+x^3-\frac{1}{2}x^2  

 −5x5−x3−12x2-5x^5-x^3-\frac{1}{2}x^2  

 5x5−x3−12x25x^5-x^3-\frac{1}{2}x^2  

 −5x5+x2−12x2-5x^5+x^2-\frac{1}{2}x^2  

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Giaˊ  trị x thỏa ma~n 2x(5−3x)+2x(3x−5)−3(x−7)=3 laˋGiá\ \ trị\ x\ thỏa\ mãn\ 2x\left(5-3x\right)+2x\left(3x-5\right)-3\left(x-7\right)=3\ là  

6

-6

4

-4

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Tıˊnh (x−y)(2x−y) ta được:Tính\ \left(x-y\right)\left(2x-y\right)\ ta\ được:  

 2x2+3xy−y22x^2+3xy-y^2  

 2x2−3xy+y22x^2-3xy+y^2  

 2x2−xy+y22x^2-xy+y^2  

 2x2+xy−y22x^2+xy-y^2  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Tıˊnh(x−2)(x−5) ba˘ˋng:Tính\left(x-2\right)\left(x-5\right)\ bằng:  

 x2+10x^2+10  

 x2+7x+10x^2+7x+10  

 x2−7x+10x^2-7x+10  

 x2−3x+10x^2-3x+10  

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Tıˋm x bie^ˊt (5x−3)(7x+2)−35x(x−1)=48. x ba˘ˋng:Tìm\ x\ biết\ \left(5x-3\right)\left(7x+2\right)-35x\left(x-1\right)=48.\ x\ bằng:  

-2

 12\frac{1}{2}  

2

Một kết quả khác

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Microsoft

Continue with Microsoft

or continue with

Facebook

Facebook

Apple

Apple

Others

Others

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

Already have an account?