若4x²y³+mx²y³=-2x²y³,则m=
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若4x²y³+mx²y³=-2x²y³,则m=若4x²y³+mx²y³=-2x²y
若4x²y³+mx²y³=-2x²y³,则m=
若4x²y³+mx²y³=-2x²y³,则m=
若4x²y³+mx²y³=-2x²y³,则m=
合并同类项得(6+m)x`2 y`3=0即6+m=0得出m=-6
若4x²y³+mx²y³=-2x²y³，
则m=-6