document.write( "Question 257121: what is the product of 90 and 110 \n" ); document.write( "
Algebra.Com's Answer #189085 by rajagopalan(174)\"\" \"About 
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Product of 90 and 110
\n" ); document.write( "90=100-10
\n" ); document.write( "110=100+10
\n" ); document.write( "(100+10)*(100-10)
\n" ); document.write( "100^2-10^2
\n" ); document.write( "10000-100
\n" ); document.write( "9900
\n" ); document.write( "
\n" );