Ответ:
1)a²+ab-5a-5b=a(a+b)-5(a+b)=(a+b)(a-5)=
2)x²-xy-3x+3y=x(x-y)-3(x-y)=(x-y)(x-3)=
3)5a²+5ax-7a+7x=5a(a-x)-7(a-x)=(a-x)(5a-7)=
Объяснение:
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Ответ:
1)a²+ab-5a-5b=a(a+b)-5(a+b)=(a+b)(a-5)=
2)x²-xy-3x+3y=x(x-y)-3(x-y)=(x-y)(x-3)=
3)5a²+5ax-7a+7x=5a(a-x)-7(a-x)=(a-x)(5a-7)=
Объяснение: