Brianna is graphing the function f(x) = x2 + 6x + 5. What x-intercepts should Brianna use to graph f(x)?

The x-intercepts occur where f(x) = 0. Factor x² + 6x + 5 as (x + 1)(x + 5) = 0, so x = −1 or x = −5. Brianna should use the x-intercepts −5 and −1, which is choice A.

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