What two numbers multiply to -780 and add up to -4?

Here we answer the question: "What two numbers multiply to -780 and add up to -4?"

The answer to your question is:

-30 and 26

Below we illustrate and prove that -30 and 26 multiply to -780 and add up to -4:

-30 × 26 = -780
-30 + 26 = -4

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

x² - 4x - 780 = 0

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

(x - 30 ) (x + 26)

To summarize, since -30 and 26 multiply to -780 and add up -4, you know that the following is true:

x² - 4x - 780 = (x - 30 ) (x + 26)

Multiply To One Number and Add Up To Another
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