化简:(1)(1+根号2)(1-根号3);(2)(√5-√20)/√125
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 16:35:31
![化简:(1)(1+根号2)(1-根号3);(2)(√5-√20)/√125](/uploads/image/z/1001609-17-9.jpg?t=%E5%8C%96%E7%AE%80%EF%BC%9A%EF%BC%881%EF%BC%89%EF%BC%881%2B%E6%A0%B9%E5%8F%B72%EF%BC%89%EF%BC%881-%E6%A0%B9%E5%8F%B73%EF%BC%89%EF%BC%9B%EF%BC%882%EF%BC%89%EF%BC%88%E2%88%9A5-%E2%88%9A20%EF%BC%89%2F%E2%88%9A125)
化简:(1)(1+根号2)(1-根号3);(2)(√5-√20)/√125
化简:(1)(1+根号2)(1-根号3);(2)(√5-√20)/√125
化简:(1)(1+根号2)(1-根号3);(2)(√5-√20)/√125
(1+√2)(1-√3)
=1-√3+√2-√6
(√5-√20)/√125
=√5÷√125-√20÷√125
=1/√25-√4/√25
=1/5-2/5
=-1/5
1)原式=1+√2-√3-√6
2)原式=(√5-2√5)/(5√5)=-1/5