What two numbers multiply to -80 and add up to -11?

Here we answer the question: "What two numbers multiply to -80 and add up to -11?"

The answer to your question is:

-16 and 5

Below we illustrate and prove that -16 and 5 multiply to -80 and add up to -11:

-16 × 5 = -80
-16 + 5 = -11

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

x² - 11x - 80 = 0

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

(x - 16 ) (x + 5)

To summarize, since -16 and 5 multiply to -80 and add up -11, you know that the following is true:

x² - 11x - 80 = (x - 16 ) (x + 5)

Multiply To One Number and Add Up To Another
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