计算:(1)(1⼀3√18-1⼀2√12)-(3√1⼀3-2√1⼀2) (2)1⼀√2+1⼀√3-√3⼀2-√2

2024-12-19 09:59:07
推荐回答(2个)
回答1:

(1)(1/3√18-1/2√12)-(3√1/3-2√1/2)
=√2-√3-√3+√2
=-2√3+2√2

(2)1/√2+1/√3-√3/2-√2
=√2/2+√3/3-√3/2-√2
= -√2/2-√3/6

回答2:

(1/3√18-1/2√12)-(3√1/3-2√1/2)
=(√2-√3)-(√3-√2)
=√2-√3-√3+√2
=2√2-2√3

1/√2+1/√3-√3/2-√2
=1/2√2+1/3√3-1/2√3-√2
=1/2√2-√2+1/3√3-1/2√3
=-1/2√2-1/6√3