What two numbers multiply to 815 and add up to -816?

Here we answer the question: "What two numbers multiply to 815 and add up to -816?"

The answer to your question is:

-815 and -1

Below we illustrate and prove that -815 and -1 multiply to 815 and add up to -816:

-815 × -1 = 815
-815 + -1 = -816

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

x² - 816x + 815 = 0

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

(x - 815 ) (x - 1)

To summarize, since -815 and -1 multiply to 815 and add up -816, you know that the following is true:

x² - 816x + 815 = (x - 815 ) (x - 1)

Multiply To One Number and Add Up To Another
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