What two numbers multiply to -521 and add up to -520?

Here we answer the question: "What two numbers multiply to -521 and add up to -520?"

The answer to your question is:

-521 and 1

Below we illustrate and prove that -521 and 1 multiply to -521 and add up to -520:

-521 × 1 = -521
-521 + 1 = -520

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

x² - 520x - 521 = 0

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

(x - 521 ) (x + 1)

To summarize, since -521 and 1 multiply to -521 and add up -520, you know that the following is true:

x² - 520x - 521 = (x - 521 ) (x + 1)

Multiply To One Number and Add Up To Another
Did you find the information on this page useful? Here you can solve a similar problem.