What two numbers multiply to -321 and add up to -320?

Here we answer the question: "What two numbers multiply to -321 and add up to -320?"

The answer to your question is:

-321 and 1

Below we illustrate and prove that -321 and 1 multiply to -321 and add up to -320:

-321 × 1 = -321
-321 + 1 = -320

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

x² - 320x - 321 = 0

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

(x - 321 ) (x + 1)

To summarize, since -321 and 1 multiply to -321 and add up -320, you know that the following is true:

x² - 320x - 321 = (x - 321 ) (x + 1)

Multiply To One Number and Add Up To Another
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