What two numbers multiply to -63 and add up to -18?

Here we answer the question: "What two numbers multiply to -63 and add up to -18?"

The answer to your question is:

-21 and 3

Below we illustrate and prove that -21 and 3 multiply to -63 and add up to -18:

-21 × 3 = -63
-21 + 3 = -18

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

x² - 18x - 63 = 0

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

(x - 21 ) (x + 3)

To summarize, since -21 and 3 multiply to -63 and add up -18, you know that the following is true:

x² - 18x - 63 = (x - 21 ) (x + 3)

Multiply To One Number and Add Up To Another
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