What two numbers multiply to -440 and add up to 47?

Here we answer the question: "What two numbers multiply to -440 and add up to 47?"

The answer to your question is:

-8 and 55

Below we illustrate and prove that -8 and 55 multiply to -440 and add up to 47:

-8 × 55 = -440
-8 + 55 = 47

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

x² + 47x - 440 = 0

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

(x - 8 ) (x + 55)

To summarize, since -8 and 55 multiply to -440 and add up 47, you know that the following is true:

x² + 47x - 440 = (x - 8 ) (x + 55)

Multiply To One Number and Add Up To Another
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