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7 сынып алгебра

Authored by Айнур Ахметжанова

Mathematics

10th Grade

Used 176+ times

7 сынып алгебра
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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 2(7а)=2\cdot\left(7-а\right)=  

14-2а

14-а

-14-2а

-14+2а

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 2(3х2у)32\cdot\left(3х-2у\right)\cdot3  

18х-12у

6х-4у

9х-6у

-18х-12у

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 3х(2а+b)3х\cdot\left(2а+b\right)  

6ax+3xb

6a+3b

3ax+3bx

6ax+3b

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 6a(5b2a)-6a\left(5b-2a\right)  

-30ab+12a

 30ab+12a2-30ab+12a^2  

-30ab-12a

 30ab12a2-30ab-12a^2  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 (12a)(4a28a+6)\left(-\frac{\text{1}}{2}a\right)\cdot\left(-4a^2-8a+6\right)  

 2a3+4a23a2a^3+4a^2-3a  

 2a34a2+6a-2a^3-4a^2+6a  

 8a316a212a8a^3-16a^2-12a  

 2a34a23a2a^3-4a^2-3a  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 12xy(5x2+10xy4y2)-\frac{\text{1}}{\text{2}}xy\cdot\left(5x^2+10xy-4y^2\right)  

 2,5x3y5x2y2+2xy32,5x^3y-5x^2y^2+2xy^3  

 10x3y20x2y2+8xy210x^3y-20x^2y^2+8xy^2  

 2,5x3y5x2y2+2xy3-2,5x^3y-5x^2y^2+2xy^3  

 5x3y5x2y2+2xy35x^3y-5x^2y^2+2xy^3  

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 xy+2x-xy+2x  

 x(2y)x\left(2-y\right)  

 x(y+2)-x\left(y+2\right)  

 x(y2)x\left(y-2\right)  

 x(y+2)x\left(y+2\right)  

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