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:

-243 and 3

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

-243 × 3 = -729
-243 + 3 = -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 - 243 ) (x + 3)

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

x² - 240x - 729 = (x - 243 ) (x + 3)

Multiply To One Number and Add Up To Another
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