The answer is: " w ^(-2/9) " .
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Note: [w^(-4/3) ] ^ (1/6) = w ^ [ (-4/3) * (1/6) .
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(-4/3) * (1/6) = (-4 * 1) / (3 * 6) = -4 / 18 = (-4÷2) / (18÷2) = -2/9 ;
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So; [w^(-4/3) ] ^ (1/6) =
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w ^(-2/9) .
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