What two numbers multiply to -407 and add up to -406?

Here we answer the question: "What two numbers multiply to -407 and add up to -406?"

The answer to your question is:

-407 and 1

Below we illustrate and prove that -407 and 1 multiply to -407 and add up to -406:

-407 × 1 = -407
-407 + 1 = -406

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

x² - 406x - 407 = 0

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

(x - 407 ) (x + 1)

To summarize, since -407 and 1 multiply to -407 and add up -406, you know that the following is true:

x² - 406x - 407 = (x - 407 ) (x + 1)

Multiply To One Number and Add Up To Another
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