What two numbers multiply to 839 and add up to -840?

Here we answer the question: "What two numbers multiply to 839 and add up to -840?"

The answer to your question is:

-839 and -1

Below we illustrate and prove that -839 and -1 multiply to 839 and add up to -840:

-839 × -1 = 839
-839 + -1 = -840

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

x² - 840x + 839 = 0

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

(x - 839 ) (x - 1)

To summarize, since -839 and -1 multiply to 839 and add up -840, you know that the following is true:

x² - 840x + 839 = (x - 839 ) (x - 1)

Multiply To One Number and Add Up To Another
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