What two numbers multiply to -990 and add up to -79?

Here we answer the question: "What two numbers multiply to -990 and add up to -79?"

The answer to your question is:

-90 and 11

Below we illustrate and prove that -90 and 11 multiply to -990 and add up to -79:

-90 × 11 = -990
-90 + 11 = -79

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

x² - 79x - 990 = 0

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

(x - 90 ) (x + 11)

To summarize, since -90 and 11 multiply to -990 and add up -79, you know that the following is true:

x² - 79x - 990 = (x - 90 ) (x + 11)

Multiply To One Number and Add Up To Another
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