What two numbers multiply to -189 and add up to -12?

Here we answer the question: "What two numbers multiply to -189 and add up to -12?"

The answer to your question is:

-21 and 9

Below we illustrate and prove that -21 and 9 multiply to -189 and add up to -12:

-21 × 9 = -189
-21 + 9 = -12

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

x² - 12x - 189 = 0

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

(x - 21 ) (x + 9)

To summarize, since -21 and 9 multiply to -189 and add up -12, you know that the following is true:

x² - 12x - 189 = (x - 21 ) (x + 9)

Multiply To One Number and Add Up To Another
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