document.write( "Question 710207: Hi,
\n" );
document.write( "I keep trying to figure out where I am going wrong in this equation but I cannot. The equation is...
\n" );
document.write( "a=b
\n" );
document.write( "a^2=ab
\n" );
document.write( "a^2-b^2=ab-b^2
\n" );
document.write( "(a+b)(a-b)=b(a-b)
\n" );
document.write( "a+b=b
\n" );
document.write( "a+a=a
\n" );
document.write( "2a=a
\n" );
document.write( "2=1 \n" );
document.write( "
Algebra.Com's Answer #436908 by Edwin McCravy(20055)![]() ![]() You can put this solution on YOUR website! \r\n" ); document.write( "a=b\r\n" ); document.write( " a^2=ab\r\n" ); document.write( " a^2-b^2=ab-b^2\r\n" ); document.write( " (a+b)(a-b)=b(a-b)\r\n" ); document.write( " a+b=b <-- this step is wrong because you can only divide both\r\n" ); document.write( " sides by a number other than zero, however the first\r\n" ); document.write( " step is a=b which means that a-b = 0, so this step\r\n" ); document.write( " is incorrect because it divides the preceding step\r\n" ); document.write( " through by zero. \r\n" ); document.write( "\r\n" ); document.write( "Edwin\n" ); document.write( " |