What two numbers multiply to -780 and add up to 779?

Here we answer the question: "What two numbers multiply to -780 and add up to 779?"

The answer to your question is:

-1 and 780

Below we illustrate and prove that -1 and 780 multiply to -780 and add up to 779:

-1 × 780 = -780
-1 + 780 = 779

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

x² + 779x - 780 = 0

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

(x - 1 ) (x + 780)

To summarize, since -1 and 780 multiply to -780 and add up 779, you know that the following is true:

x² + 779x - 780 = (x - 1 ) (x + 780)

Multiply To One Number and Add Up To Another
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