Find out X
25^x=1/^3square root 5
27^x+5=9^2x-1
8x16^x-1 =4^3x
The first one contains a typo and makes no sense
2nd:
I bet you mean:
27^(x+5) = 9^(2x-1)
then ...
(3^3)^(x+5) = (3^2)^(2x-1)
3^(3x+15) = 3^(4x-2)
3x + 15 = 4x - 2
-x = -17
x = 17
3rd:
8(16^(x-1) = 4^(3x)
(2^3)(2^(4x-4) = 2(6x)
2^(4x-1) = 2^(6x)
4x-1 = 6x
-2x = 1
x = -1/2