-5/2≤x & lt； 3, x=0 or x=-5.

5 √ (3a), -2 √ 3/9,-1-2, √ (x-y), √ x+√ y, √ m+√ n (Note: brackets mean that everything in brackets is in the root sign, so don't write brackets when writing, the same below).

√(2 times) /3 times, 2 times

1 1

1≤x≤4

- 1

3√2+ 10√3

-3，a+b=0

a^7/b^3