What two numbers multiply to -220 and add up to 9?




Here we answer the question: "What two numbers multiply to -220 and add up to 9?"

The answer to your question is:

-11 and 20


Below we illustrate and prove that -11 and 20 multiply to -220 and add up to 9:

-11 × 20 = -220
-11 + 20 = 9

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

x2 + 9x - 220 = 0

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

(x - 11 ) (x + 20)

To summarize, since -11 and 20 multiply to -220 and add up 9, you know that the following is true:

x2 + 9x - 220 = (x - 11 ) (x + 20)


Multiply To One Number and Add Up To Another
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