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:

-780 and 1

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

-780 × 1 = -780
-780 + 1 = -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 - 780 ) (x + 1)

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

x² - 779x - 780 = (x - 780 ) (x + 1)

Multiply To One Number and Add Up To Another
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