15х + 10y; a2 – ab; n(7-m) + k(7–m); 8m2n – 4mn3 ; a(b-c)+3(c-b).

Question

15х + 10y; a2 – ab; n(7-m) + k(7–m); 8m2n – 4mn3 ; a(b-c)+3(c-b).

Answer 1

1.5(3х+2у)

2.a*(2-b)

3.(7-m)*(n+k)

4.16mn-12mn=4mn

5.(b-c)*(a-3)