What two numbers multiply to 684 and add up to -685?

Here we answer the question: "What two numbers multiply to 684 and add up to -685?"

The answer to your question is:

-684 and -1

Below we illustrate and prove that -684 and -1 multiply to 684 and add up to -685:

-684 × -1 = 684
-684 + -1 = -685

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

x² - 685x + 684 = 0

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

(x - 684 ) (x - 1)

To summarize, since -684 and -1 multiply to 684 and add up -685, you know that the following is true:

x² - 685x + 684 = (x - 684 ) (x - 1)

Multiply To One Number and Add Up To Another
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