Solve for x:
x^3+2 x^2-5 x-6 = 0
The left hand side factors into a product with three terms:
(x-2) (x+1) (x+3) = 0
Split into three equations:
x-2 = 0 or x+1 = 0 or x+3 = 0
Add 2 to both sides:
x = 2 or x+1 = 0 or x+3 = 0
Subtract 1 from both sides:
x = 2 or x = -1 or x+3 = 0
Subtract 3 from both sides:
Answer: | x = 2 or x = -1 or x = -3
