What two numbers multiply to 864 and add up to -84?

Here we answer the question: "What two numbers multiply to 864 and add up to -84?"

The answer to your question is:

-72 and -12

Below we illustrate and prove that -72 and -12 multiply to 864 and add up to -84:

-72 × -12 = 864
-72 + -12 = -84

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

x² - 84x + 864 = 0

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

(x - 72 ) (x - 12)

To summarize, since -72 and -12 multiply to 864 and add up -84, you know that the following is true:

x² - 84x + 864 = (x - 72 ) (x - 12)

Multiply To One Number and Add Up To Another
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