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sol. 84. is equal to 3. When simpli...
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sol. 84. is equal to 3. When simplified, Sol. တ
11th - 12th Class
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( begin{aligned}left(frac{18}{81}right)^{-3 / 4} & 2 cdot(8)(81 / 16)^{3 / 4} =&(3 / 2)^{3} =& 27 / 8 end{aligned} )
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