What two numbers multiply to -508 and add up to 123?

Here we answer the question: "What two numbers multiply to -508 and add up to 123?"

The answer to your question is:

-4 and 127

Below we illustrate and prove that -4 and 127 multiply to -508 and add up to 123:

-4 × 127 = -508
-4 + 127 = 123

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

x² + 123x - 508 = 0

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

(x - 4 ) (x + 127)

To summarize, since -4 and 127 multiply to -508 and add up 123, you know that the following is true:

x² + 123x - 508 = (x - 4 ) (x + 127)

Multiply To One Number and Add Up To Another
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