What two numbers multiply to -399 and add up to -130?

Here we answer the question: "What two numbers multiply to -399 and add up to -130?"

The answer to your question is:

-133 and 3

Below we illustrate and prove that -133 and 3 multiply to -399 and add up to -130:

-133 × 3 = -399
-133 + 3 = -130

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

x² - 130x - 399 = 0

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

(x - 133 ) (x + 3)

To summarize, since -133 and 3 multiply to -399 and add up -130, you know that the following is true:

x² - 130x - 399 = (x - 133 ) (x + 3)

Multiply To One Number and Add Up To Another
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