Solve for x:
2x^2-6x-20 = 0.
0. = 0:
2x^2-6x-20 = 0
The left hand side factors into a product with three terms:
2 (x-5) (x+2) = 0
Divide both sides by 2:
(x-5) (x+2) = 0
Split into two equations:
x-5 = 0 or x+2 = 0
Add 5 to both sides:
x = 5 or x+2 = 0
Subtract 2 from both sides:
Answer: |
| x = 5 or x = -2
