What two numbers multiply to -691 and add up to -690?

Here we answer the question: "What two numbers multiply to -691 and add up to -690?"

The answer to your question is:

-691 and 1

Below we illustrate and prove that -691 and 1 multiply to -691 and add up to -690:

-691 × 1 = -691
-691 + 1 = -690

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

x² - 690x - 691 = 0

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

(x - 691 ) (x + 1)

To summarize, since -691 and 1 multiply to -691 and add up -690, you know that the following is true:

x² - 690x - 691 = (x - 691 ) (x + 1)

Multiply To One Number and Add Up To Another
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