Question 434387


Area of the square is {{{9x^4-24x^2+16}}}

 = {{{(3x^2 - 4)^2}}} ....=> a side has length {{{3x^2 - 4}}} 

...=> the perimeter is {{{4*side}}}...=>

{{{4(3x^2 - 4) = 12x^2 - 16}}}