Question 889917
L for length
w for width


The description makes L=-1+4w and wL=33.


Substituting for L,
{{{w(4w-1)=33}}}
{{{4w^2-w-33=0}}}

Try to factorize.
{{{(4w+11)(w-3)=0}}}
{{{4w-11=0}}}
{{{4w=11}}}
{{{highlight(w=11/4=2&3/4)}}}


Compute L using the now found w.