计算:(2x/3根号9x)+(6x根号x/4)-(x^3根号1/x^3)
问题描述:
计算:(2x/3根号9x)+(6x根号x/4)-(x^3根号1/x^3)
一题十五分,
答
(2x/3根号9x)+(6x根号x/4)-(x^3根号1/x^3)
=(2x/3√9x)+6x√x/4-x^3√1/x^3
=2x/9√x+3x√x-x^3√(1/x)/x
=2√x/9+3x√x-x√x
=2√x/9+2x√x20分钟后没人回答,或回答得更好,就采纳你。如果对你有帮助,就OK