document.write( "Question 408346: factor completely 9r^2-16 \n" ); document.write( "
Algebra.Com's Answer #287803 by ankor@dixie-net.com(22740)\"\" \"About 
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factor completely 9r^2-16
\n" ); document.write( "this is the difference of squares
\n" ); document.write( "(3r-4)(3r+4)
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