# Trial and Error Exercises

### Example 1

Factor *x*^{2} + 7*x* – 8.

### Example 2

Factor *x*^{2} + 9*x* + 20.

### Example 3

Factor *x*^{2} – 5*x* – 6.

### Example 4

Factor 3*x*^{2} – 3*x* – 36.

### Example 5

Factor 4*x*^{3} + 44*x*^{2} + 120*x*.

### Example 6

Factor *x*^{2} + 5*x* + 4.

### Example 7

Factor 2*x*^{2} + 13*x* + 15.

### Example 8

Factor 3*x*^{2} + 3*x* – 18.

### Example 9

Factor -6*x*^{2} + 5*x* – 1.

### Example 10

Factor 40*x*^{2} – 46*x* + 12.