What two numbers multiply to -702 and add up to -21?

Here we answer the question: "What two numbers multiply to -702 and add up to -21?"

The answer to your question is:

-39 and 18

Below we illustrate and prove that -39 and 18 multiply to -702 and add up to -21:

-39 × 18 = -702
-39 + 18 = -21

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

x² - 21x - 702 = 0

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

(x - 39 ) (x + 18)

To summarize, since -39 and 18 multiply to -702 and add up -21, you know that the following is true:

x² - 21x - 702 = (x - 39 ) (x + 18)

Multiply To One Number and Add Up To Another
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