What two numbers multiply to 427 and add up to -428?

Here we answer the question: "What two numbers multiply to 427 and add up to -428?"

The answer to your question is:

-427 and -1

Below we illustrate and prove that -427 and -1 multiply to 427 and add up to -428:

-427 × -1 = 427
-427 + -1 = -428

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

x² - 428x + 427 = 0

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

(x - 427 ) (x - 1)

To summarize, since -427 and -1 multiply to 427 and add up -428, you know that the following is true:

x² - 428x + 427 = (x - 427 ) (x - 1)

Multiply To One Number and Add Up To Another
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