What two numbers multiply to -394 and add up to 393?

Here we answer the question: "What two numbers multiply to -394 and add up to 393?"

The answer to your question is:

-1 and 394

Below we illustrate and prove that -1 and 394 multiply to -394 and add up to 393:

-1 × 394 = -394
-1 + 394 = 393

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

x² + 393x - 394 = 0

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

(x - 1 ) (x + 394)

To summarize, since -1 and 394 multiply to -394 and add up 393, you know that the following is true:

x² + 393x - 394 = (x - 1 ) (x + 394)

Multiply To One Number and Add Up To Another
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