What two numbers multiply to -980 and add up to 979?

Here we answer the question: "What two numbers multiply to -980 and add up to 979?"

The answer to your question is:

-1 and 980

Below we illustrate and prove that -1 and 980 multiply to -980 and add up to 979:

-1 × 980 = -980
-1 + 980 = 979

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

x² + 979x - 980 = 0

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

(x - 1 ) (x + 980)

To summarize, since -1 and 980 multiply to -980 and add up 979, you know that the following is true:

x² + 979x - 980 = (x - 1 ) (x + 980)

Multiply To One Number and Add Up To Another
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