分式加减计算9a^2/(3a-2b)+4b^2/(2b-3a)
问题描述:
分式加减计算9a^2/(3a-2b)+4b^2/(2b-3a)
答
=9a²/(3a-2b)-4b²/(3a-2b)
=(9a²-4b²)/(3a-2b)
=(3a+2b)(3a-2b)/(3a-2b)
=3a+2b