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:

-170 and 4

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

-170 × 4 = -680
-170 + 4 = -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 - 170 ) (x + 4)

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

x² - 166x - 680 = (x - 170 ) (x + 4)

Multiply To One Number and Add Up To Another
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