Question

How do you solve `(x - 9) ^ { 2} - 4= 0`?

Answer 1

`x=11,7`

Explanation:

`(x-9)^2 -4 =0`
`(x-9)^2 = 4`
`(x-9) = +-sqrt 4`
`x-9 = +-2`
`x=11, 7`
Ask again if any information is needed concerning each step