What two numbers multiply to -398 and add up to 197?

Here we answer the question: "What two numbers multiply to -398 and add up to 197?"

The answer to your question is:

-2 and 199

Below we illustrate and prove that -2 and 199 multiply to -398 and add up to 197:

-2 × 199 = -398
-2 + 199 = 197

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

x² + 197x - 398 = 0

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

(x - 2 ) (x + 199)

To summarize, since -2 and 199 multiply to -398 and add up 197, you know that the following is true:

x² + 197x - 398 = (x - 2 ) (x + 199)

Multiply To One Number and Add Up To Another
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