The number of solutions of `3^(x+4)=243` and `243^(x+4)=3` is

The numbers of solutions of 3^(x+y)=243 and 243^(x-y)=3 is :

The number of solutions of 3^(x+y) =243 and 243^(x-y)=3 is

If 3^x=243 ,then 3^((x+1)/(2))= ____

The value of x satisfying log_(243) x=0.8 is:

If the number of terms in the expansion of (1-(2)/(x)+(4)/(x^(2)))^(n),x!=0, is 28, then the sum of the coefficients of all the terms in this expansion,is : (1)64 (2) 2187 (3) 243 (4) 729

3a^(2)b-243ab^(2)

Solve each of the following equatins : 3x^(2)-243=0