Question 196124
{{{4*sqrt(75) - 2*sqrt(147)}}}
{{{4*sqrt(25*3) - 2*sqrt(49*3)}}}
{{{4*sqrt(25)*sqrt(3) - 2*sqrt(49)*sqrt(3)}}}
{{{2*sqrt(3)*(2*sqrt(25) - sqrt(49))}}}
Square roots can be (+) or (-), so there are 
potentially 4 answers to this problem, I'm
not sure if only the (+) square root is
being called for. If so the answer is:
{{{2*sqrt(3)*(2*5 - 7)}}}
{{{2*sqrt(3)*3}}}
{{{6*sqrt(3)}}} answer
I have a hunch that's all that's needed