Question

What are the solutions to m2 – 9 = 0? m = –9 and m = 0 m = –3 and m = 3 m = –3 m = 9

Answer 1

The answer is m = 3, -3

Answer 2

m = 3 or m = –3

Explanation:

Given,

`m^2-9=0` -----(1)

For finding the solution of this equation we will solve it.

Adding 9 on both sides of equation (1),

`m^2 = 9`

`m= \pm √(9)`

`\implies m = \pm 3`

⇒ m = 3 or - 3

Thus, the solution of the given expression is m = 3 or m = -3.