What two numbers multiply to -215 and add up to 214?

Here we answer the question: "What two numbers multiply to -215 and add up to 214?"

The answer to your question is:

-1 and 215

Below we illustrate and prove that -1 and 215 multiply to -215 and add up to 214:

-1 × 215 = -215
-1 + 215 = 214

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

x² + 214x - 215 = 0

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

(x - 1 ) (x + 215)

To summarize, since -1 and 215 multiply to -215 and add up 214, you know that the following is true:

x² + 214x - 215 = (x - 1 ) (x + 215)

Multiply To One Number and Add Up To Another
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