化简(x²+4/x-2)+(4x/2-x)

问题描述:

化简(x²+4/x-2)+(4x/2-x)


原式
=(x²+4)/(x-2)-4x/(x-2)
=(x²+4-4x)/(x-2)
=(x-2)²/(x-2)
=x-2