What two numbers multiply to -520 and add up to 57?

Here we answer the question: "What two numbers multiply to -520 and add up to 57?"

The answer to your question is:

-8 and 65

Below we illustrate and prove that -8 and 65 multiply to -520 and add up to 57:

-8 × 65 = -520
-8 + 65 = 57

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

x² + 57x - 520 = 0

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

(x - 8 ) (x + 65)

To summarize, since -8 and 65 multiply to -520 and add up 57, you know that the following is true:

x² + 57x - 520 = (x - 8 ) (x + 65)

Multiply To One Number and Add Up To Another
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