what are the solutions to $m^{2}-9 = 0$?\n$m=-9$ and $m = 0$\n$m=-3$ and $m = 3$\n$m=-3$\n$m = 9$

Answer:

B. $m = -3$ and $m = 3$

Explanation:

Step1: Isolate the variable term

$m^{2}-9 = 0$ can be rewritten as $m^{2}=9$.

Step2: Take square - root of both sides

$m=\pm\sqrt{9}$.

Step3: Calculate the square - root value

Since $\sqrt{9} = 3$, then $m=-3$ or $m = 3$.