Question

упростите выражение (3b+2)•(2b-2)-(6b+1)•(b+4)=

Answer 1

$(3b+2)(2b-2)-(6b+1)(b+4)= \\ 6b^2+4b-3b-4-(6b^2+b+24b+4)=6b^2+b-4-6b^2-25b-4= \\ -24b-8=-8(3b+1)$

Answer 2

(3b+2)(2b-2)-(6b+1)(b+4)=(6b^2+4b-6b-4)-(6b^2+b+24b+4)=-2b-4-25b-4=-27b-8