What two numbers multiply to -642 and add up to -211?

Here we answer the question: "What two numbers multiply to -642 and add up to -211?"

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 -211:

-214 × 3 = -642
-214 + 3 = -211

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

x² - 211x - 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 -211, you know that the following is true:

x² - 211x - 642 = (x - 214 ) (x + 3)

Multiply To One Number and Add Up To Another
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