What two numbers multiply to -312 and add up to 31?




Here we answer the question: "What two numbers multiply to -312 and add up to 31?"

The answer to your question is:

-8 and 39


Below we illustrate and prove that -8 and 39 multiply to -312 and add up to 31:

-8 × 39 = -312
-8 + 39 = 31

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

x2 + 31x - 312 = 0

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

(x - 8 ) (x + 39)

To summarize, since -8 and 39 multiply to -312 and add up 31, you know that the following is true:

x2 + 31x - 312 = (x - 8 ) (x + 39)


Multiply To One Number and Add Up To Another
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