What two numbers multiply to 780 and add up to -77?

Here we answer the question: "What two numbers multiply to 780 and add up to -77?"

The answer to your question is:

-65 and -12

Below we illustrate and prove that -65 and -12 multiply to 780 and add up to -77:

-65 × -12 = 780
-65 + -12 = -77

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

x² - 77x + 780 = 0

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

(x - 65 ) (x - 12)

To summarize, since -65 and -12 multiply to 780 and add up -77, you know that the following is true:

x² - 77x + 780 = (x - 65 ) (x - 12)

Multiply To One Number and Add Up To Another
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