What two numbers multiply to -279 and add up to 278?

Here we answer the question: "What two numbers multiply to -279 and add up to 278?"

The answer to your question is:

-1 and 279

Below we illustrate and prove that -1 and 279 multiply to -279 and add up to 278:

-1 × 279 = -279
-1 + 279 = 278

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

x² + 278x - 279 = 0

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

(x - 1 ) (x + 279)

To summarize, since -1 and 279 multiply to -279 and add up 278, you know that the following is true:

x² + 278x - 279 = (x - 1 ) (x + 279)

Multiply To One Number and Add Up To Another
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