What two numbers multiply to -420 and add up to -79?

Here we answer the question: "What two numbers multiply to -420 and add up to -79?"

The answer to your question is:

-84 and 5

Below we illustrate and prove that -84 and 5 multiply to -420 and add up to -79:

-84 × 5 = -420
-84 + 5 = -79

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

x² - 79x - 420 = 0

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

(x - 84 ) (x + 5)

To summarize, since -84 and 5 multiply to -420 and add up -79, you know that the following is true:

x² - 79x - 420 = (x - 84 ) (x + 5)

Multiply To One Number and Add Up To Another
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