What two numbers multiply to -260 and add up to 128?

Here we answer the question: "What two numbers multiply to -260 and add up to 128?"

The answer to your question is:

-2 and 130

Below we illustrate and prove that -2 and 130 multiply to -260 and add up to 128:

-2 × 130 = -260
-2 + 130 = 128

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

x² + 128x - 260 = 0

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

(x - 2 ) (x + 130)

To summarize, since -2 and 130 multiply to -260 and add up 128, you know that the following is true:

x² + 128x - 260 = (x - 2 ) (x + 130)

Multiply To One Number and Add Up To Another
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