What two numbers multiply to -491 and add up to 490?

Here we answer the question: "What two numbers multiply to -491 and add up to 490?"

The answer to your question is:

-1 and 491

Below we illustrate and prove that -1 and 491 multiply to -491 and add up to 490:

-1 × 491 = -491
-1 + 491 = 490

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

x² + 490x - 491 = 0

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

(x - 1 ) (x + 491)

To summarize, since -1 and 491 multiply to -491 and add up 490, you know that the following is true:

x² + 490x - 491 = (x - 1 ) (x + 491)

Multiply To One Number and Add Up To Another
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