What two numbers multiply to -778 and add up to 387?

Here we answer the question: "What two numbers multiply to -778 and add up to 387?"

The answer to your question is:

-2 and 389

Below we illustrate and prove that -2 and 389 multiply to -778 and add up to 387:

-2 × 389 = -778
-2 + 389 = 387

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

x² + 387x - 778 = 0

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

(x - 2 ) (x + 389)

To summarize, since -2 and 389 multiply to -778 and add up 387, you know that the following is true:

x² + 387x - 778 = (x - 2 ) (x + 389)

Multiply To One Number and Add Up To Another
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