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Автор - nikitabb22

Помогите А2 в первом и во втором пж

Ответ

Автор - 1NaStUsHa1

А2(1)

а) х(b+c)+5b+5c=x(b+c)+5(b+c)=(x+5)(b+c)

б)4x-4y+ax-ay=4(x-y)+a(x-y)=(4+a)(x-y)

A2(2)

a) (a-6)(a+6)+36=a^2-36+36=a^2

б) y^2+(2x-y)(2x+y)=y^2+4x^2-y^2=4x^2

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