document.write( "Question 994366: Use the formula (a+b)(a-b) = a2-b2 to complete 99x101 \n" ); document.write( "
Algebra.Com's Answer #613467 by Alan3354(69443)\"\" \"About 
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Use the formula (a+b)(a-b) = a2-b2 to complete 99x101
\n" ); document.write( "--> 100^2 - 1 = 9999
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