What two numbers multiply to -64 and add up to 12?

Here we answer the question: "What two numbers multiply to -64 and add up to 12?"

The answer to your question is:

-4 and 16

Below we illustrate and prove that -4 and 16 multiply to -64 and add up to 12:

-4 × 16 = -64
-4 + 16 = 12

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

x² + 12x - 64 = 0

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

(x - 4 ) (x + 16)

To summarize, since -4 and 16 multiply to -64 and add up 12, you know that the following is true:

x² + 12x - 64 = (x - 4 ) (x + 16)

Multiply To One Number and Add Up To Another
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