What two numbers multiply to -520 and add up to 126?

Here we answer the question: "What two numbers multiply to -520 and add up to 126?"

The answer to your question is:

-4 and 130

Below we illustrate and prove that -4 and 130 multiply to -520 and add up to 126:

-4 × 130 = -520
-4 + 130 = 126

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

x² + 126x - 520 = 0

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

(x - 4 ) (x + 130)

To summarize, since -4 and 130 multiply to -520 and add up 126, you know that the following is true:

x² + 126x - 520 = (x - 4 ) (x + 130)

Multiply To One Number and Add Up To Another
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