Question 606568
The two pieces are {{{ x }}} ft and {{{ 10 - x }}} ft long
If I make a square out of the {{{x}}} ft length,
each side will be {{{ x/4 }}} ft long, and the area 
will be {{{ (x/4)^2 = x^2/16 }}} ft2
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Each side of the other square will be {{{ ( 10 - x )/4 }}} long
The area is {{{ ((10 - x )/4)^2 = ( 10 - x )^2/16 }}} ft2