What two numbers multiply to 39 and add up to -16?

Here we answer the question: "What two numbers multiply to 39 and add up to -16?"

The answer to your question is:

-13 and -3

Below we illustrate and prove that -13 and -3 multiply to 39 and add up to -16:

-13 × -3 = 39
-13 + -3 = -16

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

x² - 16x + 39 = 0

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

(x - 13 ) (x - 3)

To summarize, since -13 and -3 multiply to 39 and add up -16, you know that the following is true:

x² - 16x + 39 = (x - 13 ) (x - 3)

Multiply To One Number and Add Up To Another
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