Question 1016523
Old office is X * X or X^2

New Office is (X-2)(X+4)

{{{(X-2)(X+4)=X^2+10}}}

{{{X^2+2X-8=X^2+10}}}

{{{2X-8=10}}}

{{{2X=18}}}

{{{X=9}}}

old office 81 sq ft

new office 91 sq ft