计算题,两部答案就好1.(√2-√12)(√18+√48)2.(1⼀2√3+√8)(√8-1⼀2√3)

2025-01-30 14:41:01
推荐回答(2个)
回答(1):

1.(√2-√12)(√18+√48)
=(√2-2√3)(3√2+4√3)
=6+4√6-6√6-24
=-18-2√6

2.(1/2√3+√8)(√8-1/2√3)
=.(√8+1/2√3)(√8-1/2√3)
=(√8)²-(1/2√3)²
=8-1/12
=7又11/12

3.(√3-1)²-(2√3)²

=3-2√3+1-12
=-8-2√3

4.√48/√3-√1/2*√12+√24

=√16-√6+2√6
=4+√6

5.√5+1/√5-√4/5

=√5+1/√5-2/√5
=√5-1/√5
=5/√5-1/√5
=4/√5

回答(2):