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Қысқаша көбейту формуласы

Authored by Сәуле Аленова

Mathematics

7th Grade

Used 599+ times

Қысқаша көбейту формуласы
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10 questions

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1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Екі өрнектің қосындысының квадраты неге тең?

(a+b)2=a22ab+b2\left(a+b\right)^2=a^2-2ab+b^2

(a+b)2=a2+2ab+b2\left(a+b\right)^2=a^2+2ab+b^2

(a+b)2=a2+ab+b2\left(a+b\right)^2=a^2+ab+b^2

(a+b)2=a2+2abb2\left(a+b\right)^2=a^2+2ab-b^2

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Екі өрнектің квадраттарының айырмасы неге тең?

a2b2=(ab)(ab)a^2-b^2=\left(a-b\right)\left(a-b\right)

a2b2=(a+b)(a+b)a^2-b^2=\left(a+b\right)\left(a+b\right)

a2b2=(ab)(a2+ab+b2)a^2-b^2=\left(a-b\right)\left(a^2+ab+b^2\right)

a2b2=(ab)(a+b)a^2-b^2=\left(a-b\right)\left(a+b\right)

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Көбейткішке жіктеңдер:

 x24x^2-4  = ?

(x-2)(x+2)

(x-4)(x+4)

(x-2)(x-4)

(x+4)(x+2)

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Екі өрнектің кубтарының айырмасы неге тең?

a3b3=(ab)(a2+2ab+b2)a^3-b^3=\left(a-b\right)\left(a^2+2ab+b^2\right)

a3b3=(a+b)(a2ab+b2)a^3-b^3=\left(a+b\right)\left(a^2-ab+b^2\right)

a3b3=(ab)(a2+ab+b2)a^3-b^3=\left(a-b\right)\left(a^2+ab+b^2\right)

a3b3=(a+b)(a22ab+b2)a^3-b^3=\left(a+b\right)\left(a^2-2ab+b^2\right)

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (2+3x)2\left(2+3x\right)^2  

 4+6x+9x24+6x+9x^2  

 4+12x+9x4+12x+9x  

 4+12x+9x24+12x+9x^2  

 4+6x+9x4+6x+9x  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (x4y)2=?\left(x-4y\right)^2=?  

 x28xy+16y2x^2-8xy+16y^2  

 x24xy+16y2x^2-4xy+16y^2  

 x8x+16y2x-8x+16y^2  

 x28xy+16yx^2-8xy+16y  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Екі өрнектің қосындысының кубы неге тең?

(a+b)3=a3+3a2b+3ab+b3\left(a+b\right)^3=a^3+3a^2b+3ab+b^3

(a+b)3=a3+a2b+ab2+b3\left(a+b\right)^3=a^3+a^2b+ab^2+b^3

(a+b)3=a3+3a2b+3ab2+b2\left(a+b\right)^3=a^3+3a^2b+3ab^2+b^2

(a+b)3=a3+3a2b+3ab2+b3\left(a+b\right)^3=a^3+3a^2b+3ab^2+b^3

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