Х^2+10х-24=х^2+10х+25-49=(х+5)^2-49=(х+5-7)*(х+5+7)=(х-2)*(х+12)
1) Y^3 * V 4Y^2 = Y^3 * 2Y = 2Y^4
2) 7A * V ( 16 \ A^2) = 7A * 4 \ A = 7A * 4A^(-1) = 28 A^ ( 1 - 1) = 28 A^0 = 28
(2a + b)^2 (b - 2a) =
= (b + 2a)(b + 2a)(b - 2a) =
= (b^2 - 4a^2)(b + 2a) =
= b^3 + 2ab^2 - 4a^2b - 8a^3