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
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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](/uploads/image/z/19927779-51-9.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%881%EF%BC%893%E2%88%9A6-%E2%88%9A5-1%2F2%E2%88%9A6%2B2%E2%88%9A5%2B2%282%29%E2%88%9A27-%E2%88%9A45-%E2%88%9A20%2B%E2%88%9A75%283%294%E2%88%9Aab%2B5%E2%88%9Aab-3%2F2%E2%88%9Aab)
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√a
=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√a
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