xy^2-2xy+2y-4
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xy^2-2xy+2y-4
xy^2-2xy+2y-4
xy^2-2xy+2y-4
xy^2-2xy+2y-4
=xy(y-2)+2(y-2)
=(y-2)(xy+2)
(-3xy+2xy)-(4xy+xy)
xy^2-2xy+2y-4
xy^2-2xy+2y-4
(x^2+2xy+y^2-4xy)*(x^2-2xy+y^2+4xy)
xy-2{xy-[3x^2y-(4xy^2+0.5xy)]+4x^2y}+6xy^2
(X-3xy+4xy-y)-[-2x-2(xy-3/2xy)-y]+6xy的过程
已知 x+y=4,xy=2,求2xy+4xy+2xy
3xy-4xy-(-2xy)
1.3xy -4xy-(2xy)
3xy-4xy-(-2xy)
x^2-xy/xy-y^2约分
(2xy-y)-2xy化简
xy'+y=-xy^2的通解
2x²y-3(2xy-xy)-xy
x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2
3(x^2y+xy)-4(xy-2x^2y)-(-xy)
5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2)
分解因式:XY^2-2XY+2Y-4?