document.write( "Question 336913: how do you factor 9-49z^2 \n" ); document.write( "
Algebra.Com's Answer #241825 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
this is the difference of squares\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "it factors into the sum and difference of the squareroots\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "(3 + 7z)(3 - 7z)
\n" ); document.write( "
\n" );