tentukan nilai x a. 3.3^x=729 b. 2^2x-6=1 c. 2.3^x=162 d. 2^x+1=5 tolong di jawab dgn menggunakan cara

a 3^(1+x) = 3^6
1+x =6; x=5
b 2^2(x+3) = 2^0
2x +6 =0
x = -3
c 2 . 3^x = 2 . 3^4
x = 4
d 2^x+1 = 5
2log5 = x+1
2log5-2log2=x
2log5/2 = x