What two numbers multiply to -80 and add up to 38?




Here we answer the question: "What two numbers multiply to -80 and add up to 38?"

The answer to your question is:

-2 and 40


Below we illustrate and prove that -2 and 40 multiply to -80 and add up to 38:

-2 × 40 = -80
-2 + 40 = 38

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

x2 + 38x - 80 = 0

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

(x - 2 ) (x + 40)

To summarize, since -2 and 40 multiply to -80 and add up 38, you know that the following is true:

x2 + 38x - 80 = (x - 2 ) (x + 40)


Multiply To One Number and Add Up To Another
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