Question

How do you solve `8(x+4)^2=9`?

Answer 1

`x = -2.939 " or " x = -5.061`

Explanation:

Do not be tempted to multiply it all out and make equal to 0.

`8(x+4)^2 = 9" divide by 8"`

`(x+4)^2 = 9/8" square root both sides"`t8#

`x+4 = +-sqrt(9/8)`

`x = +3/sqrt8 -4 " or "x = -3/sqrt8-4`

`x = -2.939 " or " x = -5.061`