What two numbers multiply to -729 and add up to 240?

Here we answer the question: "What two numbers multiply to -729 and add up to 240?"

The answer to your question is:

-3 and 243

Below we illustrate and prove that -3 and 243 multiply to -729 and add up to 240:

-3 × 243 = -729
-3 + 243 = 240

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

x² + 240x - 729 = 0

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

(x - 3 ) (x + 243)

To summarize, since -3 and 243 multiply to -729 and add up 240, you know that the following is true:

x² + 240x - 729 = (x - 3 ) (x + 243)

Multiply To One Number and Add Up To Another
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