Question

How do you solve `9(2m-3)^2+8=449`?

Answer 1

`m= -2 or 5`

Explanation:

`9(2m-3)^2+8=449`

`9(2m-3)^2 = 441`

`(2m-3)^2 = 441/9 = 49`

`2m-3 = sqrt(49) = +-7`

`2m = +-7 +3`

`2m = -4 or 10`

`m=-2 or 5`