What two numbers multiply to -780 and add up to -257?

Here we answer the question: "What two numbers multiply to -780 and add up to -257?"

The answer to your question is:

-260 and 3

Below we illustrate and prove that -260 and 3 multiply to -780 and add up to -257:

-260 × 3 = -780
-260 + 3 = -257

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

x² - 257x - 780 = 0

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

(x - 260 ) (x + 3)

To summarize, since -260 and 3 multiply to -780 and add up -257, you know that the following is true:

x² - 257x - 780 = (x - 260 ) (x + 3)

Multiply To One Number and Add Up To Another
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