Question

If the sum of two numbers is 18 and their product is 72, then find the difference between the numbers?​

Answer 1

6

Explanation:

x + y = 18

xy = 72

x = 18 - y

(18-y)y = 72

18y - y² = 72

y² - 18y + 72 = 0

(y- 12)(y-6) = 0

y = 12

y = 6

x = 18 - 12 = 6

the numbers are 6 and 12

12 - 6 = 6