化简(1/x-1 - 1/x1)/ x/2x²²-2

分类: 作业答案 • 2022-01-09 18:04:33

问题描述：

化简(1/x-1 - 1/x1)/ x/2x&sup2²-2
化简(1/x-1 - 1/x1)/ x/2x²-2 上面的打错了

答

(1/x-1 - 1/x1)/ x/2x22-2
=(x/x2-x - x-1/x2-x )×2x2-2/x
=1/x2-x × 2x2-2/x
=1/x(x-1) ×2(x-1)(x+1)
=2(x+1)/x2
=2x+2/x2