Question

根二-1分之1+根3（跟三-根十二）+根号八

Answer 1

1.

（√8-2√0.25）-[√（9/8）+√50+2√72/3)]

=2√2-1-3√2/4-5√2-4√2

=-1-31√2/4

2.

(20√54-8√24+2√6)÷（-2√6)

=-（60√6-16√6+2√6）/2√6

=-23

3.

（√48-√24+√12）÷√3

=（4√3-2√6+2√3）÷√3

=4-2√2+2

=6-2√2