Question

помогите -2•(а+b)
-y•(8x-3y
xy•(5x-4,5y)​

Answer 1

$- 2(a + b) = - 2a - 2b$

$- y(8x - 3y) = - 8xy + 3 {y}^{2}$

$xy(5x - 4.5y) = 5x {}^{2} y - 4.5x {y}^{2}$