Question 1134826
L, length
w, width
{{{w=(L+12)/2}}}
{{{w=L/2+6}}}


{{{Lw=2574}}}

{{{L(L/2+6)=2574}}}

{{{L^2+12L=5148}}}

{{{highlight_green(L^2+12-5148=0)}}}

-

{{{L=(-12+sqrt(144+4*5148))/2}}}

{{{L=(-12+sqrt(20736))/2}}}

{{{highlight_green(L=(-12+144)/2=highlight(66))}}}