What two numbers multiply to -441 and add up to 40?

Here we answer the question: "What two numbers multiply to -441 and add up to 40?"

The answer to your question is:

-9 and 49

Below we illustrate and prove that -9 and 49 multiply to -441 and add up to 40:

-9 × 49 = -441
-9 + 49 = 40

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

x² + 40x - 441 = 0

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

(x - 9 ) (x + 49)

To summarize, since -9 and 49 multiply to -441 and add up 40, you know that the following is true:

x² + 40x - 441 = (x - 9 ) (x + 49)

Multiply To One Number and Add Up To Another
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