What two numbers multiply to -378 and add up to -123?

Here we answer the question: "What two numbers multiply to -378 and add up to -123?"

The answer to your question is:

-126 and 3

Below we illustrate and prove that -126 and 3 multiply to -378 and add up to -123:

-126 × 3 = -378
-126 + 3 = -123

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

x² - 123x - 378 = 0

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

(x - 126 ) (x + 3)

To summarize, since -126 and 3 multiply to -378 and add up -123, you know that the following is true:

x² - 123x - 378 = (x - 126 ) (x + 3)

Multiply To One Number and Add Up To Another
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