SOLUTION: From a square piece of cardboard with width x inches, a square of width x-3 inches is removed from the center. Write the area of the remaining piece as a function of x.
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Question 60435: From a square piece of cardboard with width x inches, a square of width x-3 inches is removed from the center. Write the area of the remaining piece as a function of x. Answer by 303795(602) (Show Source):
You can put this solution on YOUR website! Area of the original piece of cardboard is .
Area of the hole is
So the difference between these is
The area of the cardboard left after the hole is cut out is therefore 6x - 9
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