How do you solve 3x² + x – 2 = 0?
1 Answer
May 8, 2016
-1 and
Explanation:
Since a - b + c = 0, use shortcut.
The 2 real roots are: -1 and (-c/a = 2/3).
REMINDER OF SHORTCUT
- When a + b + c = 0, there are 2 real roots: 1 and
- When a - b + c = 0, there are 2 real roots: -1 and (-c/a).
Remember this shortcut. It will save you a lot of time and effort.
