What two numbers multiply to 806 and add up to -405?

Here we answer the question: "What two numbers multiply to 806 and add up to -405?"

The answer to your question is:

-403 and -2

Below we illustrate and prove that -403 and -2 multiply to 806 and add up to -405:

-403 × -2 = 806
-403 + -2 = -405

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

x² - 405x + 806 = 0

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

(x - 403 ) (x - 2)

To summarize, since -403 and -2 multiply to 806 and add up -405, you know that the following is true:

x² - 405x + 806 = (x - 403 ) (x - 2)

Multiply To One Number and Add Up To Another
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