What two numbers multiply to -198 and add up to 13?

Here we answer the question: "What two numbers multiply to -198 and add up to 13?"

The answer to your question is:

-9 and 22

Below we illustrate and prove that -9 and 22 multiply to -198 and add up to 13:

-9 × 22 = -198
-9 + 22 = 13

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

x² + 13x - 198 = 0

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

(x - 9 ) (x + 22)

To summarize, since -9 and 22 multiply to -198 and add up 13, you know that the following is true:

x² + 13x - 198 = (x - 9 ) (x + 22)

Multiply To One Number and Add Up To Another
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