What two numbers multiply to -84 and add up to -5?




Here we answer the question: "What two numbers multiply to -84 and add up to -5?"

The answer to your question is:

-12 and 7


Below we illustrate and prove that -12 and 7 multiply to -84 and add up to -5:

-12 × 7 = -84
-12 + 7 = -5

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

x2 - 5x - 84 = 0

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

(x - 12 ) (x + 7)

To summarize, since -12 and 7 multiply to -84 and add up -5, you know that the following is true:

x2 - 5x - 84 = (x - 12 ) (x + 7)


Multiply To One Number and Add Up To Another
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