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Ответ

Ответ дан
moon33

Ответ:

Пошаговое объяснение:

2(a-b)*2=2(a*2-2ab+b*2)=2a*2-4ab+2b*2

A(1+2a)*2=a(1+4a+4a*2)=a+4a*2+4a*3

-6(2x-y)*2=-6(4x*2-4xy+y*2)=-24x*2+24xy-6y*2

-Y(3x-y)*2=-y(9x*2-6xy+y*2)=-9yx*2+6xy*2-y*3

Ответ

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marmelad3211

Ответ:

2(a-b)²=2(a²-2ab+b²)=2a²-4ab+2b²

a(1+2a)²=a(1+4a+4a²)=a+4a²+4a³

-6(2x-y)²=-6(4x²-4xy+y²)=-24x²+24xy-6y²

-y(3x-y)²=-y(9x²-6xy+y²)=-9x²y+6xy²-y³

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