What two numbers multiply to -512 and add up to -124?

Here we answer the question: "What two numbers multiply to -512 and add up to -124?"

The answer to your question is:

-128 and 4

Below we illustrate and prove that -128 and 4 multiply to -512 and add up to -124:

-128 × 4 = -512
-128 + 4 = -124

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

x² - 124x - 512 = 0

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

(x - 128 ) (x + 4)

To summarize, since -128 and 4 multiply to -512 and add up -124, you know that the following is true:

x² - 124x - 512 = (x - 128 ) (x + 4)

Multiply To One Number and Add Up To Another
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