What two numbers multiply to -978 and add up to 977?

Here we answer the question: "What two numbers multiply to -978 and add up to 977?"

The answer to your question is:

-1 and 978

Below we illustrate and prove that -1 and 978 multiply to -978 and add up to 977:

-1 × 978 = -978
-1 + 978 = 977

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

x² + 977x - 978 = 0

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

(x - 1 ) (x + 978)

To summarize, since -1 and 978 multiply to -978 and add up 977, you know that the following is true:

x² + 977x - 978 = (x - 1 ) (x + 978)

Multiply To One Number and Add Up To Another
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