What two numbers multiply to -64 and add up to 0?




Here we answer the question: "What two numbers multiply to -64 and add up to 0?"

The answer to your question is:

-8 and 8


Below we illustrate and prove that -8 and 8 multiply to -64 and add up to 0:

-8 × 8 = -64
-8 + 8 = 0

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

x2 + 0x - 64 = 0

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

(x - 8 ) (x + 8)

To summarize, since -8 and 8 multiply to -64 and add up 0, you know that the following is true:

x2 + 0x - 64 = (x - 8 ) (x + 8)


Multiply To One Number and Add Up To Another
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