What two numbers multiply to -456 and add up to 455?

Here we answer the question: "What two numbers multiply to -456 and add up to 455?"

The answer to your question is:

-1 and 456

Below we illustrate and prove that -1 and 456 multiply to -456 and add up to 455:

-1 × 456 = -456
-1 + 456 = 455

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

x² + 455x - 456 = 0

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

(x - 1 ) (x + 456)

To summarize, since -1 and 456 multiply to -456 and add up 455, you know that the following is true:

x² + 455x - 456 = (x - 1 ) (x + 456)

Multiply To One Number and Add Up To Another
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