[√27+√(1⼀3)]-[√12-√(1⼀5)+√45]

2024-11-26 09:38:18
推荐回答(2个)
回答1:

[√27+√(1/3)]-[√12-√(1/5)+√45]
=[3√3+√3/3]-[2√3-√5/5+3√5]
=3√3+√3/3-2√3+√5/5-3√5
=√3+√3/3+√5/5-3√5
=4√3/3-14√5/5

回答2:

[√27+√(1/3)]-[√12-√(1/5)+√45]
=[3√3+(√3)/3]-[2√3-(√(5)/5+3√5]
=3√3+(√3)/3-2√3+(√5)/5-3√5
=(4√3)/3-(14√5)/5