What two numbers multiply to -680 and add up to 166?

Here we answer the question: "What two numbers multiply to -680 and add up to 166?"

The answer to your question is:

-4 and 170

Below we illustrate and prove that -4 and 170 multiply to -680 and add up to 166:

-4 × 170 = -680
-4 + 170 = 166

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

x² + 166x - 680 = 0

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

(x - 4 ) (x + 170)

To summarize, since -4 and 170 multiply to -680 and add up 166, you know that the following is true:

x² + 166x - 680 = (x - 4 ) (x + 170)

Multiply To One Number and Add Up To Another
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