What two numbers multiply to -381 and add up to 380?

Here we answer the question: "What two numbers multiply to -381 and add up to 380?"

The answer to your question is:

-1 and 381

Below we illustrate and prove that -1 and 381 multiply to -381 and add up to 380:

-1 × 381 = -381
-1 + 381 = 380

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

x² + 380x - 381 = 0

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

(x - 1 ) (x + 381)

To summarize, since -1 and 381 multiply to -381 and add up 380, you know that the following is true:

x² + 380x - 381 = (x - 1 ) (x + 381)

Multiply To One Number and Add Up To Another
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