What two numbers multiply to -663 and add up to 218?

Here we answer the question: "What two numbers multiply to -663 and add up to 218?"

The answer to your question is:

-3 and 221

Below we illustrate and prove that -3 and 221 multiply to -663 and add up to 218:

-3 × 221 = -663
-3 + 221 = 218

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

x² + 218x - 663 = 0

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

(x - 3 ) (x + 221)

To summarize, since -3 and 221 multiply to -663 and add up 218, you know that the following is true:

x² + 218x - 663 = (x - 3 ) (x + 221)

Multiply To One Number and Add Up To Another
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