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

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

The answer to your question is:

-520 and -1

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

-520 × -1 = 520
-520 + -1 = -521

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

x² - 521x + 520 = 0

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

(x - 520 ) (x - 1)

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

x² - 521x + 520 = (x - 520 ) (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.