(二分之一x三次方y负三次方)负二次方除以(3x平方y平方)负二次方等于多少?
人气：217 ℃ 时间：2019-08-14 20:24:00
解答
原式=4x^(-6)y^6×(3x²y²)²
=4x^(-6)y^6×9x^4y^4
=36x^(-2)y^10
=36y^10/x²
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