What two numbers multiply to -172 and add up to -39?




Here we answer the question: "What two numbers multiply to -172 and add up to -39?"

The answer to your question is:

-43 and 4


Below we illustrate and prove that -43 and 4 multiply to -172 and add up to -39:

-43 × 4 = -172
-43 + 4 = -39

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

x2 - 39x - 172 = 0

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

(x - 43 ) (x + 4)

To summarize, since -43 and 4 multiply to -172 and add up -39, you know that the following is true:

x2 - 39x - 172 = (x - 43 ) (x + 4)


Multiply To One Number and Add Up To Another
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