What two numbers multiply to -822 and add up to 821?

Here we answer the question: "What two numbers multiply to -822 and add up to 821?"

The answer to your question is:

-1 and 822

Below we illustrate and prove that -1 and 822 multiply to -822 and add up to 821:

-1 × 822 = -822
-1 + 822 = 821

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

x² + 821x - 822 = 0

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

(x - 1 ) (x + 822)

To summarize, since -1 and 822 multiply to -822 and add up 821, you know that the following is true:

x² + 821x - 822 = (x - 1 ) (x + 822)

Multiply To One Number and Add Up To Another
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