simplify by factoring. Assume that all expressions under radicals represent nonegative numbers.
sqrt50a^2b
=sqrt25*2*a^28*b
=sqrt25*sqrt2*sqrta^2*sqrtb
=5a^2bsqrt2
have I got get?
It would be easier to help you if you could put this into LaTex markup.
For example, to get a square root:
$\displaystyle \sqrt{50} $
[tex] \sqrt{50} [tex]
I really don't know if the a^2b is under the square root sign or not. By the way, you should write $\displaystyle a^{2b} $ as [tex]a^{2b} [/tex]