(1/5) ^ ( 2 - 3X) = 25
5 ^ ( - ( 2 - 3X )) = 5 ^ 2
- 2 + 3X = 2
3X = 4
X = 4/3
X = 1 1/3
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8 ^ ( - 2 ) * 2 ^ X = 4
( 2 ^3 )^ ( - 2 ) * 2 ^ X = 2 ^ 2
2 ^ ( - 6) * 2 ^ X = 2 ^ 2
2 ^ ( - 6 + X ) = 2 ^ 2
- 6 + X = 2
X = 2 + 6
X = 8