What two numbers multiply to -720 and add up to 16?

Here we answer the question: "What two numbers multiply to -720 and add up to 16?"

The answer to your question is:

-20 and 36

Below we illustrate and prove that -20 and 36 multiply to -720 and add up to 16:

-20 × 36 = -720
-20 + 36 = 16

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

x² + 16x - 720 = 0

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

(x - 20 ) (x + 36)

To summarize, since -20 and 36 multiply to -720 and add up 16, you know that the following is true:

x² + 16x - 720 = (x - 20 ) (x + 36)

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.