计算:【x-2】【x+4】分之x²+4x-x²-4分之x+2=
问题描述:
计算:【x-2】【x+4】分之x²+4x-x²-4分之x+2=
答
原式=x(x+4)/(x-2)(x+4)-(x+2)/(x+2)(x-2)
=x/(x-2)-1/(x-2)
=(x-1)/(x-2)计算a+b分之b²-【b】采纳我,重新问