document.write( "Question 65633: From a square piece of cardboard with width x inches, a square of x - 3 inches is removed from the center. Write the area of the remaining piece as a function of x. \n" ); document.write( "
Algebra.Com's Answer #46311 by ptaylor(2198)\"\" \"About 
You can put this solution on YOUR website!
Area = length x width\r
\n" ); document.write( "\n" ); document.write( "Area of big square =x^2
\n" ); document.write( "area of small square=(x-3)^2=x^2-6x+9\r
\n" ); document.write( "\n" ); document.write( "Area of the remaining piece is area of big square - area of small square\r
\n" ); document.write( "\n" ); document.write( "Thus,\r
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\n" ); document.write( "\n" ); document.write( "Area of remaining piece=x^2-(x^2-6x+9)\r
\n" ); document.write( "\n" ); document.write( "Area of remaining piece=x^2-x^2+6x-9\r
\n" ); document.write( "\n" ); document.write( "Area of remaining piece=6x-9\r
\n" ); document.write( "\n" ); document.write( "Hope this helps----ptaylor
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