What two numbers multiply to -780 and add up to 151?

Here we answer the question: "What two numbers multiply to -780 and add up to 151?"

The answer to your question is:

-5 and 156

Below we illustrate and prove that -5 and 156 multiply to -780 and add up to 151:

-5 × 156 = -780
-5 + 156 = 151

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

x² + 151x - 780 = 0

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

(x - 5 ) (x + 156)

To summarize, since -5 and 156 multiply to -780 and add up 151, you know that the following is true:

x² + 151x - 780 = (x - 5 ) (x + 156)

Multiply To One Number and Add Up To Another
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