The coefficient of is A+ B on one side, 1 on the other: you must have A+ B= 1. The coefficient of s is 0 on both sides (whew!). The constant term is 9A+ 4B on one side and 8 on the other. You must have 9A+ 4B= 8.
Last edited by HallsofIvy; May 1st 2009 at 04:22 AM.