# Trial and Error Exercises

### Example 1

Factor *x*^{2} + 7*x* - 8. Remember to look for common factors first.

### Example 2

Factor *x*^{2} + 9*x* + 20. Remember to look for common factors first.

### Example 3

Factor *x*^{2} - 5*x* + 6. Remember to look for common factors first.

### Example 4

Factor 3*x*^{2} - 3*x* - 36. Remember to look for common factors first.

### Example 5

Factor 4*x*^{3} + 44*x*^{2} + 120*x*. Remember to look for common factors first.

### Example 6

Factor *x*^{2} + 5*x* + 4, if possible.

### Example 7

Factor 2*x*^{2} + 13*x* + 15, if possible.

### Example 8

Factor 3*x*^{2} + 3*x* - 18, if possible.

### Example 9

Factor - 6*x*^{2} + 5*x* - 1, if possible.

### Example 10

Factor 40*x*^{2} - 46*x* + 12, if possible.