document.write( "Question 1116627: Factorise : a^2-b^2-4ac+4c^2 \n" ); document.write( "
Algebra.Com's Answer #731537 by Alan3354(69443)\"\" \"About 
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Factorise : a^2-b^2-4ac+4c^2
\n" ); document.write( "= a^2-4ac+4c^2 - b^2
\n" ); document.write( "= (a-2c)^2 - b^2
\n" ); document.write( "= (a-2c-b)*(a-2c+b)
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