Question

How do you solve `m^ { 2} + 8m = 9`?

Answer 1

`m=-9`
`m=1`

Explanation:

Subtract `9` on both sides:

`m^2+8m-9=9-9`

`m^2+8m-9=0`

Now factor:

`(m+9)(m-1)=0`

Now solve for each:

`m+9=0`

`m=-9`

`m-1=0`

`m=1`