What two numbers multiply to -679 and add up to -678?

Here we answer the question: "What two numbers multiply to -679 and add up to -678?"

The answer to your question is:

-679 and 1

Below we illustrate and prove that -679 and 1 multiply to -679 and add up to -678:

-679 × 1 = -679
-679 + 1 = -678

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

x² - 678x - 679 = 0

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

(x - 679 ) (x + 1)

To summarize, since -679 and 1 multiply to -679 and add up -678, you know that the following is true:

x² - 678x - 679 = (x - 679 ) (x + 1)

Multiply To One Number and Add Up To Another
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