What two numbers multiply to -40 and add up to -6?

Here we answer the question: "What two numbers multiply to -40 and add up to -6?"

The answer to your question is:

-10 and 4

Below we illustrate and prove that -10 and 4 multiply to -40 and add up to -6:

-10 × 4 = -40
-10 + 4 = -6

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

x² - 6x - 40 = 0

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

(x - 10 ) (x + 4)

To summarize, since -10 and 4 multiply to -40 and add up -6, you know that the following is true:

x² - 6x - 40 = (x - 10 ) (x + 4)

Multiply To One Number and Add Up To Another
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