若m(2x-y^2)=y^4-4x^2,那么代数式m应为( ) A.-2x-y^2 B.-y^2+2x C.2x+y^2 D.2x-y^2
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若m(2x-y^2)=y^4-4x^2,那么代数式m应为( ) A.-2x-y^2 B.-y^2+2x C.2x+y^2 D.2x-y^2
若m(2x-y^2)=y^4-4x^2,那么代数式m应为( ) A.-2x-y^2 B.-y^2+2x C.2x+y^2 D.2x-y^2
若m(2x-y^2)=y^4-4x^2,那么代数式m应为( ) A.-2x-y^2 B.-y^2+2x C.2x+y^2 D.2x-y^2
A.-2x-y^2
m(2x-y^2)=y^4-4x^2
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m=-(y^2+2x)
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若m(2x-y^2)=y^4-4x^2,那么代数式m应为( ) A.-2x-y^2 B.-y^2+2x C.2x+y^2 D.2x-y^2
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