Question

Rút gọn:

D=(-4x^3y^3+x^3y^4):2xy^2-xy(2y-xy)

Answer 1

Lời giải:
$D=-4x^3y^3:(2xy^2)+(x^3y^4):(2xy^2)-(2xy^2-x^2y^2)$

$=-2x^2y+\frac{1}{2}x^2y^2-2xy^2+x^2y^2$

$-2x^2y-2xy^2+\frac{3}{2}x^2y^2$

$=xy(\frac{3}{2}xy-2y-2x)$

Answer 2

\(D=\left(-4x^3y^3+x^3y^4\right):2xy^2-xy\left(2y-xy\right)\)

\(D=-2x^2y+\dfrac{1}{2}x^2y^2-2xy^2+x^2y^2\)

\(D=-2x^2y+\dfrac{3}{2}x^2y^2-2xy^2\)