What two numbers multiply to -638 and add up to 317?

Here we answer the question: "What two numbers multiply to -638 and add up to 317?"

The answer to your question is:

-2 and 319

Below we illustrate and prove that -2 and 319 multiply to -638 and add up to 317:

-2 × 319 = -638
-2 + 319 = 317

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

x² + 317x - 638 = 0

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

(x - 2 ) (x + 319)

To summarize, since -2 and 319 multiply to -638 and add up 317, you know that the following is true:

x² + 317x - 638 = (x - 2 ) (x + 319)

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.