Hi Guys
I'm brushing up for a maths entrance paper to to study A-level maths and a factorisation question has me stumped. I need to factorise a formula to solve the equation (= 0) and I can't work out how to do it. The formula is:-
9^x - 10 x 3^x + 9 = 0
I can work this out by trial and error, but the question said I should use factorisation to solve the equation, which I cannot do. Tips or advice appreciated.
Thanks.