document.write( "Question 1157857: please help me answer the following question:\r
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Algebra.Com's Answer #780786 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "\"+D%28f%29=+%28%280.2f%2B1%2910%29%2F%288f%5E2+%2B+fs%5E2+%2B+9f+%2B+10%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"+D%28f%29=%282f+%2B+10%29%2F%288+f%5E2+%2B+f+s%5E2+%2B+9+f+%2B+10%29\"\r
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