What two numbers multiply to -115 and add up to 18?




Here we answer the question: "What two numbers multiply to -115 and add up to 18?"

The answer to your question is:

-5 and 23


Below we illustrate and prove that -5 and 23 multiply to -115 and add up to 18:

-5 × 23 = -115
-5 + 23 = 18

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

x2 + 18x - 115 = 0

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

(x - 5 ) (x + 23)

To summarize, since -5 and 23 multiply to -115 and add up 18, you know that the following is true:

x2 + 18x - 115 = (x - 5 ) (x + 23)


Multiply To One Number and Add Up To Another
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