What two numbers multiply to -808 and add up to 402?

Here we answer the question: "What two numbers multiply to -808 and add up to 402?"

The answer to your question is:

-2 and 404

Below we illustrate and prove that -2 and 404 multiply to -808 and add up to 402:

-2 × 404 = -808
-2 + 404 = 402

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

x² + 402x - 808 = 0

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

(x - 2 ) (x + 404)

To summarize, since -2 and 404 multiply to -808 and add up 402, you know that the following is true:

x² + 402x - 808 = (x - 2 ) (x + 404)

Multiply To One Number and Add Up To Another
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