What two numbers multiply to -398 and add up to -397?

Here we answer the question: "What two numbers multiply to -398 and add up to -397?"

The answer to your question is:

-398 and 1

Below we illustrate and prove that -398 and 1 multiply to -398 and add up to -397:

-398 × 1 = -398
-398 + 1 = -397

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

x² - 397x - 398 = 0

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

(x - 398 ) (x + 1)

To summarize, since -398 and 1 multiply to -398 and add up -397, you know that the following is true:

x² - 397x - 398 = (x - 398 ) (x + 1)

Multiply To One Number and Add Up To Another
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