What two numbers multiply to -40 and add up to -3?

Here we answer the question: "What two numbers multiply to -40 and add up to -3?"

The answer to your question is:

-8 and 5

Below we illustrate and prove that -8 and 5 multiply to -40 and add up to -3:

-8 × 5 = -40
-8 + 5 = -3

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

x² - 3x - 40 = 0

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

(x - 8 ) (x + 5)

To summarize, since -8 and 5 multiply to -40 and add up -3, you know that the following is true:

x² - 3x - 40 = (x - 8 ) (x + 5)

Multiply To One Number and Add Up To Another
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