Question

144q^2-(3-12q)^2=?
48у+(3у-8)^2=?

Answer 1

144q² - (3 - 12q)² = 144q² - 9 + 72q - 144q² = 72q - 9

48y + (3y - 8)² = 48y + 9y² - 48y + 64 = 9y² + 64