what are the solutions to m² - 9 = 0?\no m = -9 and m = 0\no m = -3 and m = 3\no m = -3\no m = 9

Explanation:

Step1: Rearrange the equation

We have $m^{2}-9 = 0$, which can be rewritten as $m^{2}=9$.

Step2: Take the square - root of both sides

Taking the square - root of both sides gives $m=\pm\sqrt{9}$. Since $\sqrt{9}=3$, then $m = 3$ or $m=-3$.

Answer:

$m=-3$ and $m = 3$ (corresponding to the second option in the multiple - choice)