+1124 Hi, simplify:
\(5*3^x-9*3^{x-2} \over 3^x-3^{x-1}\)
I really am stuck with this one...please help..
+118609 hi Juriemagic 
This is an unusual question :)
\(5*3^x-9*3^{x-2} \over 3^x-3^{x-1}\\ =(5*3^x-9*\frac{3^x}{9})\div(3^x-\frac{3^x}{3})\\ =(5*3^x-3^x)\div(\frac{3*3^x-3^x}{3})\\ =(4*3^x)\div(\frac{2*3^x}{3})\\ =(4*3^x)\times(\frac{3}{2*3^x})\\ =(4)\times(\frac{3}{2})\\ =6\)
+1124 Hi Melody,
thanx for the reply...can you just explain how the "5" became a "4" please?
