Question

срочно!!! 35 баллов, заранее спасибо!

Answer 1

$1)( - 3 {a}^{2} b) times ( frac{1}{3}ab) + 2a {c}^{2} times frac{1}{4} a = - {a}^{2} bab + a {c}^{2} times frac{1}{2} a = - {a}^{3} {b}^{2} + frac{1}{2} {a}^{2} {c}^{2} \ 2) - 4y times 2 {x}^{2} - 3x times 5y + 2 {x}^{2} y + 7.5x times 2y = - 8 {x}^{2} y - 15xy + 2 {x}^{2} y + 15xy = - 6 {x}^{2} y$