What two numbers multiply to -390 and add up to 11?

Here we answer the question: "What two numbers multiply to -390 and add up to 11?"

The answer to your question is:

-15 and 26

Below we illustrate and prove that -15 and 26 multiply to -390 and add up to 11:

-15 × 26 = -390
-15 + 26 = 11

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

x² + 11x - 390 = 0

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

(x - 15 ) (x + 26)

To summarize, since -15 and 26 multiply to -390 and add up 11, you know that the following is true:

x² + 11x - 390 = (x - 15 ) (x + 26)

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.