What two numbers multiply to -417 and add up to 416?

Here we answer the question: "What two numbers multiply to -417 and add up to 416?"

The answer to your question is:

-1 and 417

Below we illustrate and prove that -1 and 417 multiply to -417 and add up to 416:

-1 × 417 = -417
-1 + 417 = 416

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

x² + 416x - 417 = 0

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

(x - 1 ) (x + 417)

To summarize, since -1 and 417 multiply to -417 and add up 416, you know that the following is true:

x² + 416x - 417 = (x - 1 ) (x + 417)

Multiply To One Number and Add Up To Another
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