What two numbers multiply to -667 and add up to 666?

Here we answer the question: "What two numbers multiply to -667 and add up to 666?"

The answer to your question is:

-1 and 667

Below we illustrate and prove that -1 and 667 multiply to -667 and add up to 666:

-1 × 667 = -667
-1 + 667 = 666

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

x² + 666x - 667 = 0

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

(x - 1 ) (x + 667)

To summarize, since -1 and 667 multiply to -667 and add up 666, you know that the following is true:

x² + 666x - 667 = (x - 1 ) (x + 667)

Multiply To One Number and Add Up To Another
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