What two numbers multiply to 642 and add up to 323?

Here we answer the question: "What two numbers multiply to 642 and add up to 323?"

The answer to your question is:

2 and 321

Below we illustrate and prove that 2 and 321 multiply to 642 and add up to 323:

2 × 321 = 642
2 + 321 = 323

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

x² + 323x + 642 = 0

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

(x + 2 ) (x + 321)

To summarize, since 2 and 321 multiply to 642 and add up 323, you know that the following is true:

x² + 323x + 642 = (x + 2 ) (x + 321)

Multiply To One Number and Add Up To Another
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