Jawab:
Bagian a:
[tex]( \frac{1}{4} ) {}^{ - 3} \\ = \frac{1}{ (\frac{1}{4}) {}^{3} } \\ = 1 \div( \frac{1}{4} ) {}^{3} \\ = 1 \div \frac{ {1}^{3} }{ {4}^{3} } \\ =1 \div \frac{1}{ {4}^{3} } \\ = 1 \times {4}^{3} \\ = {4}^{3} [/tex]
Bagian b:
[tex]\frac{3 {x}^{2} {y}^{ - 2} {z}^{ - 3} }{ {x}^{ - 2}y {z}^{2} } \\ = 3 \times \frac{ {x}^{2} {y}^{ - 2} {z}^{ - 3} }{ {x}^{ - 2}y {z}^{2} } \\ =3 \times \frac{ {x}^{2} \times {y}^{ - 2} \times {z}^{ - 3} }{ {x}^{ - 2} \times y \times {z}^{2} } \\ = 3 \times {x}^{ 2 - ( - 2)} \times {y}^{ - 2 - 1} \times {z}^{ - 3 - 2} \\ = 3 \times {x}^{4} \times {y}^{ - 3} \times {z}^{ - 5} \\ = 3 \times {x}^{4} \times \frac{1}{ {y}^{3} } \times \frac{1}{ {z}^{5} } \\ = \frac{3 {x}^{4} }{ {y}^{3} {z}^{5} } [/tex]
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