Question

Jack is building a rectangular dog pen that he wishes to enclose. The width of the pen is 2 yards less than the length. If the area of the dog pen is 15 square yards, Jack needs how many yards of fencing to completely enclose the pen?

Answer 1

let l for the length, W for the width
A= L*w
15=L*(L-2)
15=L^2-2L
0 = L^2 -2L -15

Answer 2

use , quadratic equation form solve