Re: HSC 2013 2U Marathon
Sorry if I make mistakes with the editing and such, I'm a noob on this website - as you can probably tell by my attempt at using and not knowing how to input the characters alpha and beta.
2log(x-1)=log4x - logx
(x-1)^2 = 4
x^2 -2x-3=0
x=3 or x=-1
But...