What two numbers multiply to 720 and add up to -721?

Here we answer the question: "What two numbers multiply to 720 and add up to -721?"

The answer to your question is:

-720 and -1

Below we illustrate and prove that -720 and -1 multiply to 720 and add up to -721:

-720 × -1 = 720
-720 + -1 = -721

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

x² - 721x + 720 = 0

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

(x - 720 ) (x - 1)

To summarize, since -720 and -1 multiply to 720 and add up -721, you know that the following is true:

x² - 721x + 720 = (x - 720 ) (x - 1)

Multiply To One Number and Add Up To Another
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