What two numbers multiply to 784 and add up to -56?

Here we answer the question: "What two numbers multiply to 784 and add up to -56?"

The answer to your question is:

-28 and -28

Below we illustrate and prove that -28 and -28 multiply to 784 and add up to -56:

-28 × -28 = 784
-28 + -28 = -56

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

x² - 56x + 784 = 0

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

(x - 28 ) (x - 28)

To summarize, since -28 and -28 multiply to 784 and add up -56, you know that the following is true:

x² - 56x + 784 = (x - 28 ) (x - 28)

Multiply To One Number and Add Up To Another
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