document.write( "Question 100411: Please help me solve this problem if a rectangle has length x+3 and width x-7. Find the area of the rectangle in terms of x. \n" ); document.write( "
Algebra.Com's Answer #73090 by jim_thompson5910(35256)\"\" \"About 
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Area of a Rectangle:\r
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\n" ); document.write( "\n" ); document.write( "Since length is x+3 and the width is x-7, the area is \r
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\n" ); document.write( "\n" ); document.write( "\"A=%28x%2B3%29%28x-7%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"A=x%5E2-7x%2B3x-21\" Foil\r
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\n" ); document.write( "\n" ); document.write( "\"A=x%5E2-4x-21\" Combine like terms
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