1/x1-1/x2 怎么转化成x1 -x 2/x1x2
问题描述:
1/x1-1/x2 怎么转化成x1 -x 2/x1x2
答
(1/x1)-(1/x2)=(x2/(x1x2))-(x1/(x1x2))=(x2-x1)/(x1x2),通分不就好了
1/x1-1/x2 怎么转化成x1 -x 2/x1x2
(1/x1)-(1/x2)=(x2/(x1x2))-(x1/(x1x2))=(x2-x1)/(x1x2),通分不就好了