What two numbers multiply to 688 and add up to -689?

Here we answer the question: "What two numbers multiply to 688 and add up to -689?"

The answer to your question is:

-688 and -1

Below we illustrate and prove that -688 and -1 multiply to 688 and add up to -689:

-688 × -1 = 688
-688 + -1 = -689

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

x² - 689x + 688 = 0

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

(x - 688 ) (x - 1)

To summarize, since -688 and -1 multiply to 688 and add up -689, you know that the following is true:

x² - 689x + 688 = (x - 688 ) (x - 1)

Multiply To One Number and Add Up To Another
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