X-2分之X方-5--X-2分之X--2--x分之1+X
问题描述:
X-2分之X方-5--X-2分之X--2--x分之1+X
答
(x² -5)/(x-2)-x/(x-2)-(1+x)/(2-x)
=(x² -5)/(x-2)-x/(x-2)+(1+x)/(x-2)
=(x² -5-x+1+x)/(x-2)
=(x² -4)/(x-2)
=(x+2)(x-2)/(x-2)
=x+2