Answer:
The solutions are [tex]m=3, m=-3[/tex]
Step-by-step explanation:
we have
[tex]m^{2}-9=0[/tex]
Solve for m
Adds [tex]9[/tex] both sides
[tex]m^{2}-9+9=0+9[/tex]
[tex]m^{2}=9[/tex]
Take the root square both sides
[tex]m=(+/-)\sqrt{9}[/tex]
[tex]m=(+/-)3[/tex]
therefore
[tex]m=3, m=-3[/tex]
