Question

How do you simplify `sqrt72-sqrt27+2sqrt8`?

Answer 1

=`10sqrt2-3sqrt3`

Explanation:

`sqrt72`=`sqrt36xxsqrt2`=`6sqrt2`

`sqrt27=sqrt9xxsqrt3=3sqrt3`

`2sqrt8=2sqrt4xxsqrt2=4sqrt2`

so `sqrt72-sqrt27+2sqrt8`=`6sqrt2-3sqrt3+4sqrt2`

=`10sqrt2-3sqrt3`