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lilgunter12
18.06.2020 •
Mathematics
You are placing a rectangular picture on a square poster board.you can enlarge the picture to any size.The area poster board not covered by the picture is modeled by the equation A=-x^2-10x+300is it possible for the area not covered by the picture to be in 100in.
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Ответ:
yes
Step-by-step explanation:
So basically we have to solve 100 = -x² + 10x + 300 for x.
x² - 10x - 200 = 0
(x - 20)(x + 10) = 0
x = 20, -10
Ответ: