What two numbers multiply to -210 and add up to -209?

Here we answer the question: "What two numbers multiply to -210 and add up to -209?"

The answer to your question is:

-210 and 1

Below we illustrate and prove that -210 and 1 multiply to -210 and add up to -209:

-210 × 1 = -210
-210 + 1 = -209

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

x² - 209x - 210 = 0

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

(x - 210 ) (x + 1)

To summarize, since -210 and 1 multiply to -210 and add up -209, you know that the following is true:

x² - 209x - 210 = (x - 210 ) (x + 1)

Multiply To One Number and Add Up To Another
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