What two numbers multiply to -489 and add up to 488?

Here we answer the question: "What two numbers multiply to -489 and add up to 488?"

The answer to your question is:

-1 and 489

Below we illustrate and prove that -1 and 489 multiply to -489 and add up to 488:

-1 × 489 = -489
-1 + 489 = 488

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

x² + 488x - 489 = 0

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

(x - 1 ) (x + 489)

To summarize, since -1 and 489 multiply to -489 and add up 488, you know that the following is true:

x² + 488x - 489 = (x - 1 ) (x + 489)

Multiply To One Number and Add Up To Another
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