What two numbers multiply to -218 and add up to -217?

Here we answer the question: "What two numbers multiply to -218 and add up to -217?"

The answer to your question is:

-218 and 1

Below we illustrate and prove that -218 and 1 multiply to -218 and add up to -217:

-218 × 1 = -218
-218 + 1 = -217

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

x² - 217x - 218 = 0

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

(x - 218 ) (x + 1)

To summarize, since -218 and 1 multiply to -218 and add up -217, you know that the following is true:

x² - 217x - 218 = (x - 218 ) (x + 1)

Multiply To One Number and Add Up To Another
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