What two numbers multiply to 405 and add up to -138?

Here we answer the question: "What two numbers multiply to 405 and add up to -138?"

The answer to your question is:

-135 and -3

Below we illustrate and prove that -135 and -3 multiply to 405 and add up to -138:

-135 × -3 = 405
-135 + -3 = -138

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

x² - 138x + 405 = 0

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

(x - 135 ) (x - 3)

To summarize, since -135 and -3 multiply to 405 and add up -138, you know that the following is true:

x² - 138x + 405 = (x - 135 ) (x - 3)

Multiply To One Number and Add Up To Another
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