Question

просто упростите выражение на фото​

Answer 1

-4xy*(1/2 xy-1)+8x^2(1/4 y^2-2)=-2x^2*y^2+4xy+2x^2*y^2-16x^2=4xy-16x^2=4x(y-4x)

Answer 2

-4x × ( y× ( 1/2xy - 1 ) - 2x × ( 1/4y² -  2 )) = -4x × ( 1/2xy² - y - 1/2xy² + 4x ) = -4x × ( -y + 4x )