What two numbers multiply to -864 and add up to 87?

Here we answer the question: "What two numbers multiply to -864 and add up to 87?"

The answer to your question is:

-9 and 96

Below we illustrate and prove that -9 and 96 multiply to -864 and add up to 87:

-9 × 96 = -864
-9 + 96 = 87

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

x² + 87x - 864 = 0

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

(x - 9 ) (x + 96)

To summarize, since -9 and 96 multiply to -864 and add up 87, you know that the following is true:

x² + 87x - 864 = (x - 9 ) (x + 96)

Multiply To One Number and Add Up To Another
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