What two numbers multiply to -225 and add up to 0?

Here we answer the question: "What two numbers multiply to -225 and add up to 0?"

The answer to your question is:

-15 and 15

Below we illustrate and prove that -15 and 15 multiply to -225 and add up to 0:

-15 × 15 = -225
-15 + 15 = 0

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

x² + 0x - 225 = 0

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

(x - 15 ) (x + 15)

To summarize, since -15 and 15 multiply to -225 and add up 0, you know that the following is true:

x² + 0x - 225 = (x - 15 ) (x + 15)

Multiply To One Number and Add Up To Another
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