=? √5-? √5+5√3

=5√3

√ 1-√ 2√+(-? )﹣? -√2+? √-8

=√2- 1+4-√2-2

= 1

√9+ √ -5 √ -(2-√3)?

=3+5- 1

=7

√8+√0-√?

=2+0-?

=2-0.5

= 1.5

√(-3)? +( 1/2)﹣? -20 15?

=3+2- 1

=4