Question

4(5-3у)квадрат-4(2у-4)(2у+4)помогите решить

Answer 1

= 4 ( 25 - 30у + 9у^2) - 4 (4y^2 - 16) = 100 - 120y + 36y^2 - 16y^2 + 64 =
= 20y^2 - 120y + 164 = 5y^2 - 30y + 41