Question

ПОМОГИТЕ 2X(X-Y)-(2XY+X)

Answer 1

2x(x-y)-(2xy+x)=2x*(x-y)-x*(2y+1)=x*(2(x-y)-(2y+1))=x*(2x-2y-2y-1)=x*(2x-4y-1)

Answer 2

$2x(x - y) - (2xy + x) = 2 {x}^{2} - 2xy - 2xy - x = \\ = 2 {x}^{2} - 4xy - x$

Или :

$2x(x - y) - (2xy + x) = 2x(x - y) - x(2y + 1) = \\ = x(2(x - y) - (2y + 1)) = x(2x - 2y - 2y + 1) = \\ = x(2x - 4y + 1) = 2 {x}^{2} - 4xy + x$