What two numbers multiply to -422 and add up to 421?

Here we answer the question: "What two numbers multiply to -422 and add up to 421?"

The answer to your question is:

-1 and 422

Below we illustrate and prove that -1 and 422 multiply to -422 and add up to 421:

-1 × 422 = -422
-1 + 422 = 421

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

x² + 421x - 422 = 0

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

(x - 1 ) (x + 422)

To summarize, since -1 and 422 multiply to -422 and add up 421, you know that the following is true:

x² + 421x - 422 = (x - 1 ) (x + 422)

Multiply To One Number and Add Up To Another
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