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

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

The answer to your question is:

-660 and -1

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

-660 × -1 = 660
-660 + -1 = -661

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

x² - 661x + 660 = 0

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

(x - 660 ) (x - 1)

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

x² - 661x + 660 = (x - 660 ) (x - 1)

Multiply To One Number and Add Up To Another
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