What two numbers multiply to 778 and add up to -391?

Here we answer the question: "What two numbers multiply to 778 and add up to -391?"

The answer to your question is:

-389 and -2

Below we illustrate and prove that -389 and -2 multiply to 778 and add up to -391:

-389 × -2 = 778
-389 + -2 = -391

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

x² - 391x + 778 = 0

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

(x - 389 ) (x - 2)

To summarize, since -389 and -2 multiply to 778 and add up -391, you know that the following is true:

x² - 391x + 778 = (x - 389 ) (x - 2)

Multiply To One Number and Add Up To Another
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