What two numbers multiply to -978 and add up to -487?

Here we answer the question: "What two numbers multiply to -978 and add up to -487?"

The answer to your question is:

-489 and 2

Below we illustrate and prove that -489 and 2 multiply to -978 and add up to -487:

-489 × 2 = -978
-489 + 2 = -487

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

x² - 487x - 978 = 0

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

(x - 489 ) (x + 2)

To summarize, since -489 and 2 multiply to -978 and add up -487, you know that the following is true:

x² - 487x - 978 = (x - 489 ) (x + 2)

Multiply To One Number and Add Up To Another
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