Here we answer the question: "What two numbers multiply to -816 and add up to -56?"
The answer to your question is:
-68 and 12
Below we illustrate and prove that -68 and 12 multiply to -816 and add up to -56:
-68 × 12 = -816
-68 + 12 = -56
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 56x - 816 = 0
If so, the solution to factor the quadratic equation above is:
(x - 68 ) (x + 12)
To summarize, since -68 and 12 multiply to -816 and add up -56, you know that the following is true:
x2 - 56x - 816 = (x - 68 ) (x + 12)
Multiply To One Number and Add Up To Another
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