(4)2/3X√9x-(x²√1/x-6x√x/4)
问题描述:
(4)2/3X√9x-(x²√1/x-6x√x/4)
答
2/3X√9x-(x²√1/x-6x√x/4)
=2/3×3x√x-x²√x/x+6x(√x)//2
=2x√x-x√x+3x√x
=(2-1+3)x√x
=-2x√x