Question

верно ли решила?: 4а^4(3-а^2)=12а^4-4а^6 и (в+2)(в+5)=в^2-3в-10

Answer 1

4а^4(3-а^2)=4а^4*3-4а^4*а^2=12а^4-4а^6
(в+2)(в+5)=в^2+5в+2в+10=в^2+7в+10