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[tex] (\frac{ {a}^{ - 2} {b}^{3} {c}^{ - 1}}{ {a}^{3} {b}^{ - 2} {c}^{2} })^{2} \\ = ( \frac{ {a}^{ - 2 \times 2} {b}^{3 \times 2} {c}^{ - 1 \times 2} }{ {a}^{3 \times 2} {b}^{ - 2 \times 2} {c}^{2 \times 2} } ) \\ = \frac{ {a}^{ - 4} {b}^{6} {c}^{ - 2} }{ {a}^{6} {b}^{ - 4} {c}^{4} } \\ = \frac{ {b}^{10} }{ {a}^{10} {c}^{ 6} } [/tex]
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