What two numbers multiply to -990 and add up to 23?




Here we answer the question: "What two numbers multiply to -990 and add up to 23?"

The answer to your question is:

-22 and 45


Below we illustrate and prove that -22 and 45 multiply to -990 and add up to 23:

-22 × 45 = -990
-22 + 45 = 23

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

x2 + 23x - 990 = 0

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

(x - 22 ) (x + 45)

To summarize, since -22 and 45 multiply to -990 and add up 23, you know that the following is true:

x2 + 23x - 990 = (x - 22 ) (x + 45)


Multiply To One Number and Add Up To Another
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