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2﹙b³﹚²×﹙b²﹚⁴-﹙b²﹚的5次方×﹙﹣b⁴﹚
人气:314 ℃ 时间:2019-12-09 18:19:22
解答
2﹙b³﹚²×﹙b²﹚⁴-﹙b²﹚的5次方×﹙﹣b⁴﹚
=2b^6 x b^8+b^10xb^4
=2b^14+b^14
=3b^14
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