What two numbers multiply to -516 and add up to 515?

Here we answer the question: "What two numbers multiply to -516 and add up to 515?"

The answer to your question is:

-1 and 516

Below we illustrate and prove that -1 and 516 multiply to -516 and add up to 515:

-1 × 516 = -516
-1 + 516 = 515

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

x² + 515x - 516 = 0

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

(x - 1 ) (x + 516)

To summarize, since -1 and 516 multiply to -516 and add up 515, you know that the following is true:

x² + 515x - 516 = (x - 1 ) (x + 516)

Multiply To One Number and Add Up To Another
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