Here we answer the question: "What two numbers multiply to 576 and add up to -80?"
The answer to your question is:
-72 and -8
Below we illustrate and prove that -72 and -8 multiply to 576 and add up to -80:
-72 × -8 = 576
-72 + -8 = -80
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 80x + 576 = 0
If so, the solution to factor the quadratic equation above is:
(x - 72 ) (x - 8)
To summarize, since -72 and -8 multiply to 576 and add up -80, you know that the following is true:
x2 - 80x + 576 = (x - 72 ) (x - 8)
Multiply To One Number and Add Up To Another
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