计算初二分式(-a²b³)³/(ab)的8次方(a²-ab)/a²÷(a²-b²)/ab

问题描述:

计算初二分式
(-a&sup2b&sup3)&sup3/(ab)的8次方
(a&sup2-ab)/a&sup2÷(a&sup2-b&sup2)/ab

(-a²b³)³/(ab)的8次方
=-a^6b^9/(a^8b^8)
=-b/a²
(a²-ab)/a²÷(a²-b²)/ab
=a(a-b)/a²×ab/(a+b)(a-b)
=b/(a+b)