What two numbers multiply to 663 and add up to -56?

Here we answer the question: "What two numbers multiply to 663 and add up to -56?"

The answer to your question is:

-39 and -17

Below we illustrate and prove that -39 and -17 multiply to 663 and add up to -56:

-39 × -17 = 663
-39 + -17 = -56

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

x² - 56x + 663 = 0

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

(x - 39 ) (x - 17)

To summarize, since -39 and -17 multiply to 663 and add up -56, you know that the following is true:

x² - 56x + 663 = (x - 39 ) (x - 17)

Multiply To One Number and Add Up To Another
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