What two numbers multiply to -686 and add up to -91?

Here we answer the question: "What two numbers multiply to -686 and add up to -91?"

The answer to your question is:

-98 and 7

Below we illustrate and prove that -98 and 7 multiply to -686 and add up to -91:

-98 × 7 = -686
-98 + 7 = -91

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

x² - 91x - 686 = 0

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

(x - 98 ) (x + 7)

To summarize, since -98 and 7 multiply to -686 and add up -91, you know that the following is true:

x² - 91x - 686 = (x - 98 ) (x + 7)

Multiply To One Number and Add Up To Another
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