Question

3(3-4a)(4a+3)+2(2a+3)^2
упростить

Answer 1

3(3-4a)(4a+3)+2(2a+3)^2=3(9-16а²)+2(4а²+12а+9)=27-48а²+8а²+24а+18=-40а²+24а+45=
=40а²-24а-45