Hey guys, I've been having trouble with these problems!! iv tried it a million ways and still cant figure it out

any help??

Solve each quadratic equation by factoring:

1. 3^2x - 4^x + 3 = 0

(im completely lost on this one)

2. 1/x - x = 8/3

(for this one i tried multiplying X and 3 to all the parts of the question but i came up with the wrong answer.)

Thanks in advance!