What two numbers multiply to -221 and add up to -220?

Here we answer the question: "What two numbers multiply to -221 and add up to -220?"

The answer to your question is:

-221 and 1

Below we illustrate and prove that -221 and 1 multiply to -221 and add up to -220:

-221 × 1 = -221
-221 + 1 = -220

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

x² - 220x - 221 = 0

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

(x - 221 ) (x + 1)

To summarize, since -221 and 1 multiply to -221 and add up -220, you know that the following is true:

x² - 220x - 221 = (x - 221 ) (x + 1)

Multiply To One Number and Add Up To Another
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