(√X1-√X2)+1/X2-1/X1是如何化简为(√X1-√X2)(√X1+√X2+X1X2)/X1X2的.
2021-04-21 124次 反馈错误 加入收藏 正确率 : 100%
题目内容:
(√X1-√X2)+1/X2-1/X1是如何化简为 (√X1-√X2)(√X1+√X2+X1X2)/X1X2的 .
优质解答
(√X1-√X2)+1/X2-1/X1
=(√X1-√X2)+(x1-x2)/X2X1
=(√X1-√X2)+(√x1-√x2)(√x1+√x2)/X2X1
=(√X1-√X2)[1+(√x1+√x2)/X2X1]
=(√X1-√X2)(√X1+√X2+X1X2)/X1X2
本题链接: