3(x³)乘以x³-(3x³)³+(5x)²乘以x的7次方

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3(x³)乘以x³-(3x³)³+(5x)²乘以x的7次方
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3(x³)乘以x³-(3x³)³+(5x)²乘以x的7次方
3(x³)乘以x³-(3x³)³+(5x)²乘以x的7次方

3(x³)乘以x³-(3x³)³+(5x)²乘以x的7次方