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:

-3 and 214

Below we illustrate and prove that -3 and 214 multiply to -642 and add up to 211:

-3 × 214 = -642
-3 + 214 = 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 - 3 ) (x + 214)

To summarize, since -3 and 214 multiply to -642 and add up 211, you know that the following is true:

x² + 211x - 642 = (x - 3 ) (x + 214)

Multiply To One Number and Add Up To Another
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