Question

Упростите выражение
9(4-3х)^2-4(2х+1)^2
3(3-4а)(4а+3)+2(2а+3)^2

Answer 1

9(16-24x+9x²)-4(4x²+4x+1)=144-216x+81x²-16x²-16x-4=65x²-232x+140

3(9-16a²)+2(4a²+12a+9)=27-48a²+8a²+24a+18=-40a²+24a+45