# 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.