What two numbers multiply to -681 and add up to 680?

Here we answer the question: "What two numbers multiply to -681 and add up to 680?"

The answer to your question is:

-1 and 681

Below we illustrate and prove that -1 and 681 multiply to -681 and add up to 680:

-1 × 681 = -681
-1 + 681 = 680

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

x² + 680x - 681 = 0

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

(x - 1 ) (x + 681)

To summarize, since -1 and 681 multiply to -681 and add up 680, you know that the following is true:

x² + 680x - 681 = (x - 1 ) (x + 681)

Multiply To One Number and Add Up To Another
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