What two numbers multiply to -15 and add up to 2?

Here we answer the question: "What two numbers multiply to -15 and add up to 2?"

The answer to your question is:

-3 and 5

Below we illustrate and prove that -3 and 5 multiply to -15 and add up to 2:

-3 × 5 = -15
-3 + 5 = 2

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

x² + 2x - 15 = 0

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

(x - 3 ) (x + 5)

To summarize, since -3 and 5 multiply to -15 and add up 2, you know that the following is true:

x² + 2x - 15 = (x - 3 ) (x + 5)

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.