What two numbers multiply to 63 and add up to -16?

Here we answer the question: "What two numbers multiply to 63 and add up to -16?"

The answer to your question is:

-9 and -7

Below we illustrate and prove that -9 and -7 multiply to 63 and add up to -16:

-9 × -7 = 63
-9 + -7 = -16

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

x² - 16x + 63 = 0

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

(x - 9 ) (x - 7)

To summarize, since -9 and -7 multiply to 63 and add up -16, you know that the following is true:

x² - 16x + 63 = (x - 9 ) (x - 7)

Multiply To One Number and Add Up To Another
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