document.write( "Question 177315: Simplify ( 3x + 4y) ( 3x – 4y) \n" ); document.write( "
Algebra.Com's Answer #132656 by dini(5)\"\" \"About 
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(3x+4y)*(3x-4y)
\n" ); document.write( "=3x3x-3x4y+3x4y-4y4y
\n" ); document.write( "=9x^2-12xy+12xy-16y^2
\n" ); document.write( "=9x^2-16y^2
\n" ); document.write( "
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