Question 147500
L = W + 4
L*W = 60
W*(W+4) = 60
{{{W^2 + 4W = 60}}}
{{{W^2 + 4W - 60 = 0}}}
*[invoke solve_quadratic_equation 1,4,-60]
Since a negative width makes no sense, we go with W = 6.
That makes the length = 10.
BTW, it's means "it is", not "it is dimensions"