What two numbers multiply to -840 and add up to -22?

Here we answer the question: "What two numbers multiply to -840 and add up to -22?"

The answer to your question is:

-42 and 20

Below we illustrate and prove that -42 and 20 multiply to -840 and add up to -22:

-42 × 20 = -840
-42 + 20 = -22

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

x² - 22x - 840 = 0

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

(x - 42 ) (x + 20)

To summarize, since -42 and 20 multiply to -840 and add up -22, you know that the following is true:

x² - 22x - 840 = (x - 42 ) (x + 20)

Multiply To One Number and Add Up To Another
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