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:

-11 and 9

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

-11 × 9 = -99
-11 + 9 = -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 - 11 ) (x + 9)

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

x² - 2x - 99 = (x - 11 ) (x + 9)

Multiply To One Number and Add Up To Another
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