What two numbers multiply to -20 and add up to -8?

Here we answer the question: "What two numbers multiply to -20 and add up to -8?"

The answer to your question is:

-10 and 2

Below we illustrate and prove that -10 and 2 multiply to -20 and add up to -8:

-10 × 2 = -20
-10 + 2 = -8

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

x² - 8x - 20 = 0

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

(x - 10 ) (x + 2)

To summarize, since -10 and 2 multiply to -20 and add up -8, you know that the following is true:

x² - 8x - 20 = (x - 10 ) (x + 2)

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.