Question

帮忙解一下题，多谢！！！！！！

Answer 1

1.              根号34                 15/根号34[即(15倍根号34)/34]

2.             9                           54/5

3.              5倍根号2               5

4.               a²√3/4                 

5.                6                          6√3                      3√3

6.               C
   

Answer 2

1. √34 √34/15
2. 16 19.2
3. 5√2 5
4.√3·a²/2
5. 6 6√3 3√3
6.选D
∵ 两直角边a、b的和=√6
∴6=(a﹢b)²=a²+b²+2ab
=2+2ab
即ab=2
∴三角形的面积=1/2·ab=1