What two numbers multiply to -657 and add up to 656?

Here we answer the question: "What two numbers multiply to -657 and add up to 656?"

The answer to your question is:

-1 and 657

Below we illustrate and prove that -1 and 657 multiply to -657 and add up to 656:

-1 × 657 = -657
-1 + 657 = 656

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

x² + 656x - 657 = 0

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

(x - 1 ) (x + 657)

To summarize, since -1 and 657 multiply to -657 and add up 656, you know that the following is true:

x² + 656x - 657 = (x - 1 ) (x + 657)

Multiply To One Number and Add Up To Another
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