Question

please solve it fast....​

Answer 1

Answer:

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Answer 2

Answer:

2

Step-by-step explanation:

$(\frac{3}{4} )^{2x - 2} = \frac{81}{256} \\ = > (\frac{3}{4} )^{2x - 2} = ( \frac{3}{4} )^{4} \\ since \: bases \: are \: same \: power\: \\ must \: be \: equal \\ 2x - 2 = 4 \\ 2x = 4 + 2 \\ x = 6 \div 2 = 3$