What two numbers multiply to 978 and add up to 491?

Here we answer the question: "What two numbers multiply to 978 and add up to 491?"

The answer to your question is:

2 and 489

Below we illustrate and prove that 2 and 489 multiply to 978 and add up to 491:

2 × 489 = 978
2 + 489 = 491

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

x² + 491x + 978 = 0

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

(x + 2 ) (x + 489)

To summarize, since 2 and 489 multiply to 978 and add up 491, you know that the following is true:

x² + 491x + 978 = (x + 2 ) (x + 489)

Multiply To One Number and Add Up To Another
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