What two numbers multiply to -280 and add up to -138?

Here we answer the question: "What two numbers multiply to -280 and add up to -138?"

The answer to your question is:

-140 and 2

Below we illustrate and prove that -140 and 2 multiply to -280 and add up to -138:

-140 × 2 = -280
-140 + 2 = -138

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

x² - 138x - 280 = 0

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

(x - 140 ) (x + 2)

To summarize, since -140 and 2 multiply to -280 and add up -138, you know that the following is true:

x² - 138x - 280 = (x - 140 ) (x + 2)

Multiply To One Number and Add Up To Another
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