What two numbers multiply to -480 and add up to 479?

Here we answer the question: "What two numbers multiply to -480 and add up to 479?"

The answer to your question is:

-1 and 480

Below we illustrate and prove that -1 and 480 multiply to -480 and add up to 479:

-1 × 480 = -480
-1 + 480 = 479

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

x² + 479x - 480 = 0

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

(x - 1 ) (x + 480)

To summarize, since -1 and 480 multiply to -480 and add up 479, you know that the following is true:

x² + 479x - 480 = (x - 1 ) (x + 480)

Multiply To One Number and Add Up To Another
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