What two numbers multiply to 423 and add up to -424?

Here we answer the question: "What two numbers multiply to 423 and add up to -424?"

The answer to your question is:

-423 and -1

Below we illustrate and prove that -423 and -1 multiply to 423 and add up to -424:

-423 × -1 = 423
-423 + -1 = -424

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

x² - 424x + 423 = 0

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

(x - 423 ) (x - 1)

To summarize, since -423 and -1 multiply to 423 and add up -424, you know that the following is true:

x² - 424x + 423 = (x - 423 ) (x - 1)

Multiply To One Number and Add Up To Another
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