计算:5xy^2-[3xy^2-(4xy^2-2x^2y)]+2x^2y-xy^2
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计算:5xy^2-[3xy^2-(4xy^2-2x^2y)]+2x^2y-xy^2
计算:5xy^2-[3xy^2-(4xy^2-2x^2y)]+2x^2y-xy^2
计算:5xy^2-[3xy^2-(4xy^2-2x^2y)]+2x^2y-xy^2
5xy^2-[3xy^2-(4xy^2-2x^2y)]+2x^2y-xy^2
=5xy^2+2x^2y-xy^2-(3xy^2-4xy^2+2x^2y)
=4xy^2+2x^2y-(-xy^2+2x^2y)
=4xy^2+2x^2y+xy^2-2x^2y
=5xy^2
(-3xy+2xy)-(4xy+xy)
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3xy-4xy-(-2xy)
3xy-4xy-(-2xy)
计算:5xy^2-[3xy^2-(4xy^2-2x^2y)]+2x^2y-xy^2
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3xy-3xy-xy+2yx
1.3xy -4xy-(2xy)
2xy.(-3xy)÷(xy)
2xy-xy-(-3xy)=
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