Question 937741
The area of a square is {{{A=1.69cm^2}}}

if the length of one side of the square is {{{(3+2x)cm}}}, then 

{{{(3+2x)cm*(3+2x)cm=1.69cm^2}}}

{{{(3+2x)^2cm^2=1.69cm^2}}}...take square root of both sides

{{{sqrt((3+2x)^2cm^2)=sqrt(1.69cm^2)}}}

{{{(3+2x)cross(cm)=1.3cross(cm)}}}

{{{3+2x=1.3}}}

{{{2x=1.3-3}}}

{{{2x=-1.7}}}

{{{x=-1.7/2}}}

{{{highlight(x=-0.85)}}}

now find side:{{{(3+2x)cm}}}

{{{(3+2(-0.85))cm}}}

{{{(3-1.7)cm}}}

{{{highlight(1.3cm)}}}

check the area:

{{{1.3cm*1.3cm=1.69cm^2}}}

{{{1.69cm^2=1.69cm^2}}}