document.write( "Question 522949: Simplify by removing factors of 1.\r \n" );
document.write( "\n" );
document.write( "s^2-81/(s+9)^2\r \n" );
document.write( "\n" );
document.write( "I understand this factors out to (s+9(s-9)/(s+9)(s+9), but from here, how do I handle having nothing on the bottom? It would be s-9/ ?? Also, what if this occurs on the opposite? An equation on the bottom half of the fraction but not the top?\r \n" );
document.write( "\n" );
document.write( "Thanks for you help! \n" );
document.write( "
![\"\"](\"/images/stars/stars-13.gif\")
