What two numbers multiply to 54 and add up to -15?

Here we answer the question: "What two numbers multiply to 54 and add up to -15?"

The answer to your question is:

-9 and -6

Below we illustrate and prove that -9 and -6 multiply to 54 and add up to -15:

-9 × -6 = 54
-9 + -6 = -15

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

x² - 15x + 54 = 0

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

(x - 9 ) (x - 6)

To summarize, since -9 and -6 multiply to 54 and add up -15, you know that the following is true:

x² - 15x + 54 = (x - 9 ) (x - 6)

Multiply To One Number and Add Up To Another
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