Try factoring 16n^2+24n+9 on the TI-89. It gives you the answer 16(n+.75)^2 What is that??? On my HP48GX using the Alg48 4.0 LIB, using the factor comand I get the correct answer (4n+3)^2.... Is there a way to get my TI-89 to give me an answer like this??? Help! Please respond via e-mail. capasso@cyberenet.net Thanks! Joe capasso@cyberenet.net