What two numbers multiply to -780 and add up to -19?

Here we answer the question: "What two numbers multiply to -780 and add up to -19?"

The answer to your question is:

-39 and 20

Below we illustrate and prove that -39 and 20 multiply to -780 and add up to -19:

-39 × 20 = -780
-39 + 20 = -19

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

x² - 19x - 780 = 0

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

(x - 39 ) (x + 20)

To summarize, since -39 and 20 multiply to -780 and add up -19, you know that the following is true:

x² - 19x - 780 = (x - 39 ) (x + 20)

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.