3xy-4xy-(-2xy) 快啊,亲
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3xy-4xy-(-2xy) 快啊,亲
3xy-4xy-(-2xy) 快啊,亲
3xy-4xy-(-2xy) 快啊,亲
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=-xy+2xy=xy
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3xy-4xy+2xy
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Xy
=-1xy+1xy =0
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3xy-4xy-(-2xy) 快啊,亲
(-3xy+2xy)-(4xy+xy)
3xy-4xy-(-2xy)
3xy-4xy-(-2xy)
(-4xy^3)×(-xy)+(-3xy^2)^2
(-3xy^2)^2+(-4xy^3)*(-xy)=多少
(-4xy^3)*(-xy)+(-3xy^2)^2
(3xy^2)^2+(-xy^3)(4xy)
计算-xy-(4z-2xy)-(3xy-4z)
-xy(4z-2xy)-(3xy-4z) 化简
计算:3xy-4xy-(-2xy)要过程
(1)3xy-4xy-(-2xy)
3xy-4xy-(-2xy)的解法
3xy-3xy-xy+2yx
4xy+6xy-3xy=?
1.3xy -4xy-(2xy)
2xy.(-3xy)÷(xy)
2xy-xy-(-3xy)=