What two numbers multiply to -817 and add up to 816?

Here we answer the question: "What two numbers multiply to -817 and add up to 816?"

The answer to your question is:

-1 and 817

Below we illustrate and prove that -1 and 817 multiply to -817 and add up to 816:

-1 × 817 = -817
-1 + 817 = 816

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

x² + 816x - 817 = 0

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

(x - 1 ) (x + 817)

To summarize, since -1 and 817 multiply to -817 and add up 816, you know that the following is true:

x² + 816x - 817 = (x - 1 ) (x + 817)

Multiply To One Number and Add Up To Another
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