`x^6-729`

Factorise : 64x^3-729y^3

If 6^(x-y)=36 and 3^(x+y)=729 , then find x^(2)-y^(2) .

If 3^x=729 , wỉhat is 3^(x-1) ?

If 3^(4X-2)=729 , then find the value of X.

(2+5omega +2 omega^2)^6=(2+2omega+5 omega^2)^6=729

r^(3)=729 then r=?

If (4sqrt(3)+5sqrt(2))/(sqrt(48)+sqrt(18))=(a+bsqrt(6))/(15) and ((a)/(b))^(x)((b)/(a))^(2x)=(64)/(729) , then find x .