What two numbers multiply to -642 and add up to -319?

Here we answer the question: "What two numbers multiply to -642 and add up to -319?"

The answer to your question is:

-321 and 2

Below we illustrate and prove that -321 and 2 multiply to -642 and add up to -319:

-321 × 2 = -642
-321 + 2 = -319

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

x² - 319x - 642 = 0

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

(x - 321 ) (x + 2)

To summarize, since -321 and 2 multiply to -642 and add up -319, you know that the following is true:

x² - 319x - 642 = (x - 321 ) (x + 2)

Multiply To One Number and Add Up To Another
Did you find the information on this page useful? Here you can solve a similar problem.