What two numbers multiply to -198 and add up to 197?

Here we answer the question: "What two numbers multiply to -198 and add up to 197?"

The answer to your question is:

-1 and 198

Below we illustrate and prove that -1 and 198 multiply to -198 and add up to 197:

-1 × 198 = -198
-1 + 198 = 197

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

x² + 197x - 198 = 0

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

(x - 1 ) (x + 198)

To summarize, since -1 and 198 multiply to -198 and add up 197, you know that the following is true:

x² + 197x - 198 = (x - 1 ) (x + 198)

Multiply To One Number and Add Up To Another
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