Question

How do you solve using the completing the square method `x^2 + 6x - 66 = 6`?

Answer 1

6 and -12

Explanation:

`x^2 + 6x = 72`
`x^2 + 6x + 9 = 72 + 9 = 81`
`(x + 3)^2 = 81`
`(x + 3) = +- 9`
`x = - 3 - 9 = -12`
`x = -3 + 9 = 6`