What two numbers multiply to -990 and add up to 101?

Here we answer the question: "What two numbers multiply to -990 and add up to 101?"

The answer to your question is:

-9 and 110

Below we illustrate and prove that -9 and 110 multiply to -990 and add up to 101:

-9 × 110 = -990
-9 + 110 = 101

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

x² + 101x - 990 = 0

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

(x - 9 ) (x + 110)

To summarize, since -9 and 110 multiply to -990 and add up 101, you know that the following is true:

x² + 101x - 990 = (x - 9 ) (x + 110)

Multiply To One Number and Add Up To Another
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