What two numbers multiply to -211 and add up to 210?

Here we answer the question: "What two numbers multiply to -211 and add up to 210?"

The answer to your question is:

-1 and 211

Below we illustrate and prove that -1 and 211 multiply to -211 and add up to 210:

-1 × 211 = -211
-1 + 211 = 210

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

x² + 210x - 211 = 0

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

(x - 1 ) (x + 211)

To summarize, since -1 and 211 multiply to -211 and add up 210, you know that the following is true:

x² + 210x - 211 = (x - 1 ) (x + 211)

Multiply To One Number and Add Up To Another
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