# Chapter 4 Quadratic Functions and Factoring - 4.3 Solve x(squared) + bx + c = 0 - 4.3 Exercises - Skill Practice - Page 256: 58

$$\pm8$$

#### Work Step by Step

Here, we see that the factors must multiply to get $7$ and add to get $b$. The only factors of 7 are $-1\ and\ -7$ and $1\ and\ 7$. Thus, the only values of b that work are: $$-1-7=-8 \\ AND \\ 1+7=8$$

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