Пошаговое объяснение:
1) b(p-k)+cp-ck=
=b(p-k)+c(p-k)=
=(p-k)(b+c);
2)a(b+9)+b+9=
=a(b+9)+1(b+9)=
=(b+9)(a+1);
3)a(c-6)+5c-30=
=a(c-6)+5(c-6)=
=(c-6)(a+5);
4)7-x+y(x-7)=
=-1(x-7)+y(x-7)=
=(x-7)(y-1);
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Answers & Comments
Пошаговое объяснение:
1) b(p-k)+cp-ck=
=b(p-k)+c(p-k)=
=(p-k)(b+c);
2)a(b+9)+b+9=
=a(b+9)+1(b+9)=
=(b+9)(a+1);
3)a(c-6)+5c-30=
=a(c-6)+5(c-6)=
=(c-6)(a+5);
4)7-x+y(x-7)=
=-1(x-7)+y(x-7)=
=(x-7)(y-1);