What two numbers multiply to 679 and add up to -680?

Here we answer the question: "What two numbers multiply to 679 and add up to -680?"

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 -680:

-679 × -1 = 679
-679 + -1 = -680

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

x² - 680x + 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 -680, you know that the following is true:

x² - 680x + 679 = (x - 679 ) (x - 1)

Multiply To One Number and Add Up To Another
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