document.write( "Question 976911: What is the solution if (a-4b+c)(a+4b+c) by using special products formulas \n" ); document.write( "
Algebra.Com's Answer #598402 by josgarithmetic(39623)\"\" \"About 
You can put this solution on YOUR website!
Maybe with some commutativity there is one special product to use.\r
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\n" ); document.write( "\n" ); document.write( "\"%28a-4b%2Bc%29%28a%2B4b%2Bc%29\"
\n" ); document.write( "\"%28a%2Bc-4b%29%28a%2Bc%2B4b%29\"
\n" ); document.write( "\"%28a%2Bc%29%5E2-%284b%29%5E2\"------used Difference of Two Squares Formula
\n" ); document.write( "and then
\n" ); document.write( "\"a%5E2%2B2ac%2Bc%5E2-16b%5E2\"------included the square binomial
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