Question 119932
LENGTH=5W+2
WIDTH=W
AREA=W*L
68=W(5W+2)
68=5W^2+2W
5W^2+2W-68=0
USING THE QUADRATIC EQUATION:{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} WE GET:
X=(-2+-SQRT[2^2-4*5*-68])/2*5
X=(-2+-SQRT[4+1360])/10
X=(-2+-SQRT1364)/10
X=(-2+-36.932)/10
X=(-2+36.932)/10
X=34.932/10
X=3.493 ANSWER
X=(-2-36.932)/10
X=-38.932/10
X=-3.893 ANSWER.