Solve
Step
Solve
If x = -1, then
3(-1)2
+ (-1)
= 2
3 – 1 = 2 
If x =
2/3, then
3(2/3)2
+ (2/3)
= 2
3(4/9) + 2/3 = 2
4/3 + 2/3 =
2
6/3 = 2
| Solve for x: 3x2 + x = 2 | |
|
Solve |
Step |
| 3x2 + x – 2 = 0 | Factor, if possible. |
| (3x – 2)(x + 1) = 0 | You must equation equal to 0 first. |
| 3x – 2 = 0 or x + 1 = 0 | Solve each linear equation separately |
| 3x – 2 = 0 gives 3x =2 | Zero Property of Multiplication |
| x = 2/3 | If ab = 0 then a = 0 or b = 0 |
| x + 1 = 0 gives x = -1 | |
| {-1, 2/3} | Solution Set Notation |
|
Solve |
|
|
If x = -1, then If x =
2/3, then |
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