一题计算题，求解要有过程，拜托啦，谢谢!

Question

如题所述

Answer 1

原式＝1/(x+2)+4/[(x+2)(x-2)]x2x/4
=1/(x+2)+2x/[(x+2)(x-2)]
=(x-2)/[(x+2)(x-2)]+2x/[(x+2)(x-2)]
=(3x-2)/[(x+2)(x-2)]