What two numbers multiply to -416 and add up to 415?

Here we answer the question: "What two numbers multiply to -416 and add up to 415?"

The answer to your question is:

-1 and 416

Below we illustrate and prove that -1 and 416 multiply to -416 and add up to 415:

-1 × 416 = -416
-1 + 416 = 415

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

x² + 415x - 416 = 0

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

(x - 1 ) (x + 416)

To summarize, since -1 and 416 multiply to -416 and add up 415, you know that the following is true:

x² + 415x - 416 = (x - 1 ) (x + 416)

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.