What two numbers multiply to -99 and add up to 2?

Here we answer the question: "What two numbers multiply to -99 and add up to 2?"

The answer to your question is:

-9 and 11

Below we illustrate and prove that -9 and 11 multiply to -99 and add up to 2:

-9 × 11 = -99
-9 + 11 = 2

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

x² + 2x - 99 = 0

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

(x - 9 ) (x + 11)

To summarize, since -9 and 11 multiply to -99 and add up 2, you know that the following is true:

x² + 2x - 99 = (x - 9 ) (x + 11)

Multiply To One Number and Add Up To Another
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