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

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

The answer to your question is:

1 and 220

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

1 × 220 = 220
1 + 220 = 221

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

x² + 221x + 220 = 0

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

(x + 1 ) (x + 220)

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

x² + 221x + 220 = (x + 1 ) (x + 220)

Multiply To One Number and Add Up To Another
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