(-2X²Y³)²×(XY)³
人气:200 ℃ 时间:2019-12-19 01:21:36
解答
解
(-2X²Y³)²×(XY)³
=4X^4Y^6×X³Y³
=4X^7Y^9
同底数幂相乘底数不变,指数相加
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