What two numbers multiply to -819 and add up to 82?

Here we answer the question: "What two numbers multiply to -819 and add up to 82?"

The answer to your question is:

-9 and 91

Below we illustrate and prove that -9 and 91 multiply to -819 and add up to 82:

-9 × 91 = -819
-9 + 91 = 82

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

x² + 82x - 819 = 0

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

(x - 9 ) (x + 91)

To summarize, since -9 and 91 multiply to -819 and add up 82, you know that the following is true:

x² + 82x - 819 = (x - 9 ) (x + 91)

Multiply To One Number and Add Up To Another
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