What two numbers multiply to -540 and add up to -21?




Here we answer the question: "What two numbers multiply to -540 and add up to -21?"

The answer to your question is:

-36 and 15


Below we illustrate and prove that -36 and 15 multiply to -540 and add up to -21:

-36 × 15 = -540
-36 + 15 = -21

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

x2 - 21x - 540 = 0

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

(x - 36 ) (x + 15)

To summarize, since -36 and 15 multiply to -540 and add up -21, you know that the following is true:

x2 - 21x - 540 = (x - 36 ) (x + 15)


Multiply To One Number and Add Up To Another
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