What two numbers multiply to -671 and add up to 670?

Here we answer the question: "What two numbers multiply to -671 and add up to 670?"

The answer to your question is:

-1 and 671

Below we illustrate and prove that -1 and 671 multiply to -671 and add up to 670:

-1 × 671 = -671
-1 + 671 = 670

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

x² + 670x - 671 = 0

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

(x - 1 ) (x + 671)

To summarize, since -1 and 671 multiply to -671 and add up 670, you know that the following is true:

x² + 670x - 671 = (x - 1 ) (x + 671)

Multiply To One Number and Add Up To Another
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