2xy.(-3xy)÷(xy)
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2xy.(-3xy)÷(xy)
2xy.(-3xy)÷(xy)
2xy.(-3xy)÷(xy)
等于负6.x.y
2xy.(-3xy)÷(xy)
(-3xy+2xy)-(4xy+xy)
3xy-3xy-xy+2yx
3xy-4xy-(-2xy)
3xy-4xy-(-2xy)
2xy-xy-(-3xy)=
【x(xy-xy)-y(x-xy)】÷3xy
[(2xy-3)(2xy+3)+(xy+3)^2]/(-xy)
xy-3xy+2xy-xy
3xy^2*(-2xy)
xy×(xy)²-3xy
xy
3xy(x^2-xy^2+xy)-xy^2(2x^2-xy+2x)
3(xy-xy)-2(xy+xy)+3xy
计算:(xy-x2)÷xy分之x2-2xy+y2
(-4xy^3)×(-xy)+(-3xy^2)^2
(-3xy^2)^2+(-4xy^3)*(-xy)=多少
(-4xy^3)*(-xy)+(-3xy^2)^2