Question 229998
let x=width; so x+3=length


area = x(x+3) = 180


x^2 + 3x - 180 = 0


factoring ___ (x + 15)(x - 12) = 0


x +15 = 0 ___ x = -15 ___ negative value not realistic


x - 12 = 0 ___ x = 12 ___ this is the width


substituting ___ length = x + 3 = 15