What two numbers multiply to 428 and add up to -429?

Here we answer the question: "What two numbers multiply to 428 and add up to -429?"

The answer to your question is:

-428 and -1

Below we illustrate and prove that -428 and -1 multiply to 428 and add up to -429:

-428 × -1 = 428
-428 + -1 = -429

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

x² - 429x + 428 = 0

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

(x - 428 ) (x - 1)

To summarize, since -428 and -1 multiply to 428 and add up -429, you know that the following is true:

x² - 429x + 428 = (x - 428 ) (x - 1)

Multiply To One Number and Add Up To Another
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