Question

What are the solutions to m2 – 9 = 0

Answer 1

(m-3)(m+3) = 0

m = 3 , - 3

Answer 2

The solutions are
`m=3, m=-3`

Explanation:

we have

`m^(2)-9=0`

Solve for m

Adds
`9` both sides

`m^(2)-9+9=0+9`

`m^(2)=9`

Take the root square both sides

`m=(+/-)√(9)`

`m=(+/-)3`

therefore

`m=3, m=-3`