What two numbers multiply to -315 and add up to -6?

Here we answer the question: "What two numbers multiply to -315 and add up to -6?"

The answer to your question is:

-21 and 15

Below we illustrate and prove that -21 and 15 multiply to -315 and add up to -6:

-21 × 15 = -315
-21 + 15 = -6

Are you asking because you are trying to figure out how to factor the following quadratic equation?

x² - 6x - 315 = 0

If so, the solution to factor the quadratic equation above is:

(x - 21 ) (x + 15)

To summarize, since -21 and 15 multiply to -315 and add up -6, you know that the following is true:

x² - 6x - 315 = (x - 21 ) (x + 15)

Multiply To One Number and Add Up To Another
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