What two numbers multiply to -393 and add up to 392?

Here we answer the question: "What two numbers multiply to -393 and add up to 392?"

The answer to your question is:

-1 and 393

Below we illustrate and prove that -1 and 393 multiply to -393 and add up to 392:

-1 × 393 = -393
-1 + 393 = 392

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

x² + 392x - 393 = 0

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

(x - 1 ) (x + 393)

To summarize, since -1 and 393 multiply to -393 and add up 392, you know that the following is true:

x² + 392x - 393 = (x - 1 ) (x + 393)

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.