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

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

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 -427:

-428 × 1 = -428
-428 + 1 = -427

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

x² - 427x - 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 -427, you know that the following is true:

x² - 427x - 428 = (x - 428 ) (x + 1)

Multiply To One Number and Add Up To Another
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