If 3^{x + 1} = 9^{x - 2}, find the value of 2^{1 + x}.

Solve the following equations:

(i) 3(2^x + 1) - 2^{x + 2} + 5 = 0

(ii) 3^x = 9.3^y, 8.2^y = 4^x.