What two numbers multiply to -391 and add up to 6?




Here we answer the question: "What two numbers multiply to -391 and add up to 6?"

The answer to your question is:

-17 and 23


Below we illustrate and prove that -17 and 23 multiply to -391 and add up to 6:

-17 × 23 = -391
-17 + 23 = 6

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

x2 + 6x - 391 = 0

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

(x - 17 ) (x + 23)

To summarize, since -17 and 23 multiply to -391 and add up 6, you know that the following is true:

x2 + 6x - 391 = (x - 17 ) (x + 23)


Multiply To One Number and Add Up To Another
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