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:

1 and 423

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

1 × 423 = 423
1 + 423 = 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 + 1 ) (x + 423)

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

x² + 424x + 423 = (x + 1 ) (x + 423)

Multiply To One Number and Add Up To Another
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