What two numbers multiply to 669 and add up to -670?

Here we answer the question: "What two numbers multiply to 669 and add up to -670?"

The answer to your question is:

-669 and -1

Below we illustrate and prove that -669 and -1 multiply to 669 and add up to -670:

-669 × -1 = 669
-669 + -1 = -670

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

x² - 670x + 669 = 0

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

(x - 669 ) (x - 1)

To summarize, since -669 and -1 multiply to 669 and add up -670, you know that the following is true:

x² - 670x + 669 = (x - 669 ) (x - 1)

Multiply To One Number and Add Up To Another
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