What two numbers multiply to -423 and add up to 138?

Here we answer the question: "What two numbers multiply to -423 and add up to 138?"

The answer to your question is:

-3 and 141

Below we illustrate and prove that -3 and 141 multiply to -423 and add up to 138:

-3 × 141 = -423
-3 + 141 = 138

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

x² + 138x - 423 = 0

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

(x - 3 ) (x + 141)

To summarize, since -3 and 141 multiply to -423 and add up 138, you know that the following is true:

x² + 138x - 423 = (x - 3 ) (x + 141)

Multiply To One Number and Add Up To Another
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