What two numbers multiply to -124 and add up to 123?

Here we answer the question: "What two numbers multiply to -124 and add up to 123?"

The answer to your question is:

-1 and 124

Below we illustrate and prove that -1 and 124 multiply to -124 and add up to 123:

-1 × 124 = -124
-1 + 124 = 123

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

x² + 123x - 124 = 0

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

(x - 1 ) (x + 124)

To summarize, since -1 and 124 multiply to -124 and add up 123, you know that the following is true:

x² + 123x - 124 = (x - 1 ) (x + 124)

Multiply To One Number and Add Up To Another
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