What two numbers multiply to -660 and add up to 217?

Here we answer the question: "What two numbers multiply to -660 and add up to 217?"

The answer to your question is:

-3 and 220

Below we illustrate and prove that -3 and 220 multiply to -660 and add up to 217:

-3 × 220 = -660
-3 + 220 = 217

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

x² + 217x - 660 = 0

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

(x - 3 ) (x + 220)

To summarize, since -3 and 220 multiply to -660 and add up 217, you know that the following is true:

x² + 217x - 660 = (x - 3 ) (x + 220)

Multiply To One Number and Add Up To Another
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