What two numbers multiply to -39 and add up to 10?

Here we answer the question: "What two numbers multiply to -39 and add up to 10?"

The answer to your question is:

-3 and 13

Below we illustrate and prove that -3 and 13 multiply to -39 and add up to 10:

-3 × 13 = -39
-3 + 13 = 10

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

x² + 10x - 39 = 0

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

(x - 3 ) (x + 13)

To summarize, since -3 and 13 multiply to -39 and add up 10, you know that the following is true:

x² + 10x - 39 = (x - 3 ) (x + 13)

Multiply To One Number and Add Up To Another
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