What two numbers multiply to -778 and add up to 777?

Here we answer the question: "What two numbers multiply to -778 and add up to 777?"

The answer to your question is:

-1 and 778

Below we illustrate and prove that -1 and 778 multiply to -778 and add up to 777:

-1 × 778 = -778
-1 + 778 = 777

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

x² + 777x - 778 = 0

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

(x - 1 ) (x + 778)

To summarize, since -1 and 778 multiply to -778 and add up 777, you know that the following is true:

x² + 777x - 778 = (x - 1 ) (x + 778)

Multiply To One Number and Add Up To Another
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