document.write( "Question 649606: (y^2+20y+100)-49x^2\r
\n" ); document.write( "\n" ); document.write( "please help
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Algebra.Com's Answer #407007 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
 
\n" ); document.write( "Hi,
\n" ); document.write( "(y^2+20y+100)-49x^2
\n" ); document.write( "(y+10)^2 - 49x^2
\n" ); document.write( "Check Factoring (y+10)(y+10) Using FOIL
\n" ); document.write( "F First terms
\n" ); document.write( "O Outside terms
\n" ); document.write( "I Inside terms
\n" ); document.write( "L Last terms
\n" ); document.write( "Again, might consider factoring twice depending on instructions given
\n" ); document.write( "(y+10)^2 - 49x^2
\n" ); document.write( "((y+10) + 7x)((y+10) - 7x) \n" ); document.write( "
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