What two numbers multiply to -261 and add up to 84?

Here we answer the question: "What two numbers multiply to -261 and add up to 84?"

The answer to your question is:

-3 and 87

Below we illustrate and prove that -3 and 87 multiply to -261 and add up to 84:

-3 × 87 = -261
-3 + 87 = 84

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

x² + 84x - 261 = 0

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

(x - 3 ) (x + 87)

To summarize, since -3 and 87 multiply to -261 and add up 84, you know that the following is true:

x² + 84x - 261 = (x - 3 ) (x + 87)

Multiply To One Number and Add Up To Another
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