Question 464832
so width is x, length is x+4.5
x(x+4.5)=243
x^2+4.5x-243=0
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
{{{x = (-4.5 +- sqrt( 20.25+972 ))/(2) }}} 
{{{x = (-4.5 +- sqrt( 992.25 ))/(2) }}}
{{{x = (-4.5 +- 31.5)/(2) }}}
{{{x = (-4.5 + 31.5)/(2) = 13.5}}}
{{{x = (-4.5 - 31.5)/(2) = -18}}}
width cant be negative, so width is 13.5
then length would be 13.5+4.5=18