Question

Factor 3x2 – 12x – 36

Can you please show me step by step?

Answer 1

3x² – 12x – 36 Factor 3
=3(x² -4x -12) Factor into (x-8)(x-4)
=3(x-8)(x-4) Solve for x
=0

x-8=0 Move 8 to the right side
---> x=8
x-4=0 Move 4 to the right side
---> x=4

The solutions are x=8,4