Answer:
x = 4, −3
Step-by-step explanation:
Step 1. Move all terms to one side.
[tex]x^{2}[/tex] − x −12 = 0
Step 2. Factor in [tex]x^{2} -x -12[/tex]
(x − 4) (x + 3 )= 0
Step 3. Solve for x and you're done!