document.write( "Question 455930: which property of real nubers is this?\r
\n" ); document.write( "\n" ); document.write( "xz + 2x = (z+2)x\r
\n" ); document.write( "\n" ); document.write( "Thanks Kevin \n" ); document.write( "
Algebra.Com's Answer #312985 by Edwin McCravy(20086)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "xz + 2x = (z+2)x\r\n" );
document.write( "\r\n" );
document.write( "The distributive principle (used in reverse).\r\n" );
document.write( "\r\n" );
document.write( "Usually the distributive principle is written\r\n" );
document.write( "\r\n" );
document.write( "x(z + 2) = xz + 2z\r\n" );
document.write( "\r\n" );
document.write( "where we say\r\n" );
document.write( "\r\n" );
document.write( "The x multiplier in front of the parentheses\r\n" );
document.write( "distributes as a multiplier to the z giving xz,\r\n" );
document.write( "then it also distributes as a multiplier to the\r\n" );
document.write( "2 giving 2z.  But x(z+2) can also be written\r\n" );
document.write( "as (z+2)x by the commutative principle, and\r\n" );
document.write( "the right and left sides of the equation can\r\n" );
document.write( "be reversed and we get:\r\n" );
document.write( "\r\n" );
document.write( "xz + 2x = (z + 2)x\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" ); document.write( "
\n" );