计算xy^2(-xy)^2-3/2xy^3*4/3x^2y
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计算xy^2(-xy)^2-3/2xy^3*4/3x^2y计算xy^2(-xy)^2-3/2xy^3*4/3x^2y计算xy^2(-xy)^2-3/2xy^3*4/3x^2y原式=xy2*x2y2-2
计算xy^2(-xy)^2-3/2xy^3*4/3x^2y
计算xy^2(-xy)^2-3/2xy^3*4/3x^2y
计算xy^2(-xy)^2-3/2xy^3*4/3x^2y
原式=xy2*x2y2-2x3y4=x3y4-2x3y4=-x3y4
(x,y后的数为几次方,前面的为系数)(前一项说明为在单项式中)
仅供参考,
(-3xy+2xy)-(4xy+xy)
计算:3xy-4xy-(-2xy)要过程
计算-xy-(4z-2xy)-(3xy-4z)
3xy-3xy-xy+2yx
3xy-4xy-(-2xy)
3xy-4xy-(-2xy)
2xy.(-3xy)÷(xy)
2xy-xy-(-3xy)=
[(2xy-3)(2xy+3)+(xy+3)^2]/(-xy)
xy-3xy+2xy-xy
3xy^2*(-2xy)
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