What two numbers multiply to -800 and add up to -70?

Here we answer the question: "What two numbers multiply to -800 and add up to -70?"

The answer to your question is:

-80 and 10

Below we illustrate and prove that -80 and 10 multiply to -800 and add up to -70:

-80 × 10 = -800
-80 + 10 = -70

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

x² - 70x - 800 = 0

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

(x - 80 ) (x + 10)

To summarize, since -80 and 10 multiply to -800 and add up -70, you know that the following is true:

x² - 70x - 800 = (x - 80 ) (x + 10)

Multiply To One Number and Add Up To Another
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