What two numbers multiply to -661 and add up to -660?

Here we answer the question: "What two numbers multiply to -661 and add up to -660?"

The answer to your question is:

-661 and 1

Below we illustrate and prove that -661 and 1 multiply to -661 and add up to -660:

-661 × 1 = -661
-661 + 1 = -660

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

x² - 660x - 661 = 0

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

(x - 661 ) (x + 1)

To summarize, since -661 and 1 multiply to -661 and add up -660, you know that the following is true:

x² - 660x - 661 = (x - 661 ) (x + 1)

Multiply To One Number and Add Up To Another
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