document.write( "Question 55078: question states:\r
\n" ); document.write( "\n" ); document.write( " from a square piece of cardboard with width x inches, a square of width x-3 in is removed from the center. write are of remaining piece as a function of x \n" ); document.write( "

Algebra.Com's Answer #37368 by rchill(405) $\"\"$ $\"About$

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Starting with a square piece that is x inches wide, the area is $\"x%5E2\"$ per definition for finding the area of a square. If the inner square is (x-3) in width, it's area is $\"%28x-3%29%5E2\"$ . So the remaining area becomes $\"x%5E2-%28x-3%29%5E2\"$ , which expands to $\"x%5E2-x%5E2%2B6x-9\"$ , which reduces to $\"6x-9\"$ . \n" ); document.write( "

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