Question 825847
{{{4*8=32*ft^2}}} original area.
Doubled area wanted is {{{2*32=64*ft^2}}}.


Increase both dimensions each by x.
{{{(x+4)(x+8)=64}}}
'
{{{x^2+12x+32=64}}}
{{{x^2+12x-32=0}}}....... Is this factorable or not?  If not, use general solution to a quadratic equation.