## Algebra: A Combined Approach (4th Edition)

Factor: $2x^{2}-9x-5$ Factors of $2x^{2}$: $2x \times x$ Factors of $-5$: $-5\times1, 5\times-1$ Try combinations of these factors: $(2x-5)(x+1) = 2x^{2}-3x-5$ Incorrect middle term $(2x+1)(x-5) = 2x^{2}-9x-5$ Correct middle term