What two numbers multiply to -802 and add up to -399?

Here we answer the question: "What two numbers multiply to -802 and add up to -399?"

The answer to your question is:

-401 and 2

Below we illustrate and prove that -401 and 2 multiply to -802 and add up to -399:

-401 × 2 = -802
-401 + 2 = -399

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

x² - 399x - 802 = 0

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

(x - 401 ) (x + 2)

To summarize, since -401 and 2 multiply to -802 and add up -399, you know that the following is true:

x² - 399x - 802 = (x - 401 ) (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.