Answer: The length is 16 cm
Step-by-step explanation:
L= 3w -2 w × L = 96 substitute for L
w(3w -2) =96
3w² -2w = 96
3w² -2w - 96 = 0 factor this
(3w + 16)(w -6) = 0 Set the w-6 factor equal to 0 and solve for w (The 3w + 16 will yield a negative number; real rectangles can't have negative dimensions!)
w-6 = 0 so w = 6
Original equation for L L =3w -2 substitute 6 for w
L = 3(6) - 2 = 18 -2
L = 16
