What two numbers multiply to 642 and add up to -217?

Here we answer the question: "What two numbers multiply to 642 and add up to -217?"

The answer to your question is:

-214 and -3

Below we illustrate and prove that -214 and -3 multiply to 642 and add up to -217:

-214 × -3 = 642
-214 + -3 = -217

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

x² - 217x + 642 = 0

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

(x - 214 ) (x - 3)

To summarize, since -214 and -3 multiply to 642 and add up -217, you know that the following is true:

x² - 217x + 642 = (x - 214 ) (x - 3)

Multiply To One Number and Add Up To Another
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