What two numbers multiply to 808 and add up to 406?

Here we answer the question: "What two numbers multiply to 808 and add up to 406?"

The answer to your question is:

2 and 404

Below we illustrate and prove that 2 and 404 multiply to 808 and add up to 406:

2 × 404 = 808
2 + 404 = 406

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

x² + 406x + 808 = 0

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

(x + 2 ) (x + 404)

To summarize, since 2 and 404 multiply to 808 and add up 406, you know that the following is true:

x² + 406x + 808 = (x + 2 ) (x + 404)

Multiply To One Number and Add Up To Another
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