What two numbers multiply to -658 and add up to -657?

Here we answer the question: "What two numbers multiply to -658 and add up to -657?"

The answer to your question is:

-658 and 1

Below we illustrate and prove that -658 and 1 multiply to -658 and add up to -657:

-658 × 1 = -658
-658 + 1 = -657

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

x² - 657x - 658 = 0

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

(x - 658 ) (x + 1)

To summarize, since -658 and 1 multiply to -658 and add up -657, you know that the following is true:

x² - 657x - 658 = (x - 658 ) (x + 1)

Multiply To One Number and Add Up To Another
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