What two numbers multiply to -199 and add up to 198?

Here we answer the question: "What two numbers multiply to -199 and add up to 198?"

The answer to your question is:

-1 and 199

Below we illustrate and prove that -1 and 199 multiply to -199 and add up to 198:

-1 × 199 = -199
-1 + 199 = 198

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

x² + 198x - 199 = 0

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

(x - 1 ) (x + 199)

To summarize, since -1 and 199 multiply to -199 and add up 198, you know that the following is true:

x² + 198x - 199 = (x - 1 ) (x + 199)

Multiply To One Number and Add Up To Another
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