What two numbers multiply to -780 and add up to 19?

Here we answer the question: "What two numbers multiply to -780 and add up to 19?"

The answer to your question is:

-20 and 39

Below we illustrate and prove that -20 and 39 multiply to -780 and add up to 19:

-20 × 39 = -780
-20 + 39 = 19

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

x² + 19x - 780 = 0

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

(x - 20 ) (x + 39)

To summarize, since -20 and 39 multiply to -780 and add up 19, you know that the following is true:

x² + 19x - 780 = (x - 20 ) (x + 39)

Multiply To One Number and Add Up To Another
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