What two numbers multiply to -811 and add up to 810?

Here we answer the question: "What two numbers multiply to -811 and add up to 810?"

The answer to your question is:

-1 and 811

Below we illustrate and prove that -1 and 811 multiply to -811 and add up to 810:

-1 × 811 = -811
-1 + 811 = 810

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

x² + 810x - 811 = 0

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

(x - 1 ) (x + 811)

To summarize, since -1 and 811 multiply to -811 and add up 810, you know that the following is true:

x² + 810x - 811 = (x - 1 ) (x + 811)

Multiply To One Number and Add Up To Another
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