-2x^2y(-2xy^2)^2+(2xy)^3X(xy^2)
3个回答

-2x^2y(-2xy^2)^2+(2xy)^3X(xy^2)

将其展开 =-4x^3y^5+2x^2y^5

提公因式 =(-2x^2y^5)(2x-1)

3xy【2xy-x(y-2)+x】

=3xy(xy+3x)

=3x^2y^2+9x^2y

(x+2)(x+3)-(x+6)(x-1)

=x^2+5x+6-x^2-5x+6

=12

(3/2x^2+xy-3/5y^2)·(-4/3x^2 y^2)

=-2/x^4y^2-4/3xy+4/5x^2