What two numbers multiply to -219 and add up to 218?

Here we answer the question: "What two numbers multiply to -219 and add up to 218?"

The answer to your question is:

-1 and 219

Below we illustrate and prove that -1 and 219 multiply to -219 and add up to 218:

-1 × 219 = -219
-1 + 219 = 218

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

x² + 218x - 219 = 0

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

(x - 1 ) (x + 219)

To summarize, since -1 and 219 multiply to -219 and add up 218, you know that the following is true:

x² + 218x - 219 = (x - 1 ) (x + 219)

Multiply To One Number and Add Up To Another
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