计算(1)3√6-√5-1/2√6+2√5+2(2)√27-√45-√20+√75(3)4√ab+5√ab-3/2√ab-√4ab(a≥0,b≥0

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/03 03:26:44
计算(1)3√6-√5-1/2√6+2√5+2(2)√27-√45-√20+√75(3)4√ab+5√ab-3/2√ab-√4ab(a≥0,b≥0

计算(1)3√6-√5-1/2√6+2√5+2(2)√27-√45-√20+√75(3)4√ab+5√ab-3/2√ab-√4ab(a≥0,b≥0
计算(1)3√6-√5-1/2√6+2√5+2(2)√27-√45-√20+√75(3)4√ab+5√ab-3/2√ab-√4ab(a≥0,b≥0

计算(1)3√6-√5-1/2√6+2√5+2(2)√27-√45-√20+√75(3)4√ab+5√ab-3/2√ab-√4ab(a≥0,b≥0
3√6-√5-1/2√6+2√5+2
=3√6-1/2√6-√5+2√5+2
=5/2√6+√5+2
√27-√45-√20+√75
=3√3-3√5-2√5+5√3
=3√3+5√3-3√5-2√5
=8√3-5√5
4√ab+5√ab-3/2√ab-√4ab(a≥0,b≥0)
=4√ab+5√ab-3/2√ab-2√ab
=11/2√ab