document.write( "Question 153471: factor completely:\r
\n" ); document.write( "\n" ); document.write( "9m^2-9\r
\n" ); document.write( "\n" ); document.write( "choices:
\n" ); document.write( "1) (3m-3)+(3m+3)
\n" ); document.write( "2) (3m+3)^2
\n" ); document.write( "3) (3m+3)(3m-3)
\n" ); document.write( "4) (3m-3)^6\r
\n" ); document.write( "\n" ); document.write( "??what is the difference between option 1 and option 3?
\n" ); document.write( "

Algebra.Com's Answer #112974 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
factor completely:
\n" ); document.write( "9m^2-9
\n" ); document.write( "choices:
\n" ); document.write( "1) (3m-3)+(3m+3)
\n" ); document.write( "2) (3m+3)^2
\n" ); document.write( "3) (3m+3)(3m-3)
\n" ); document.write( "4) (3m-3)^6
\n" ); document.write( "??what is the difference between option 1 and option 3?
\n" ); document.write( "----------------
\n" ); document.write( "Since these are your choices, 1 and 3 are both correct
\n" ); document.write( "and there is no difference.
\n" ); document.write( "----------------
\n" ); document.write( "A better way to factor your problem is:
\n" ); document.write( "= 9(m^2-1)
\n" ); document.write( "=9(m-1)(m+1)
\n" ); document.write( "===============
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "
\n" );