3x^2·x^2怎么算
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3x^2·x^2怎么算3x^2·x^2怎么算3x^2·x^2怎么算3x^2·x^2=3x^(2+2)=3x^4
3x^2·x^2怎么算
3x^2·x^2怎么算
3x^2·x^2怎么算
3x^2·x^2=3x^(2+2)=3x^4
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