Question

Quadratic applications??

Answer 1

Explanation:

2 l + 2w = 34 ⇔ l + w = 17 ⇒ l = 17 - w ..... (1)

l w = 66 ..... (2)

(1) ----> (2)

(17 - w) w = 66

w² - 17w + 66 = 0 ⇔ (w - 6)(w - 11) = 0

w = 6 cm

l = 11 cm