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Mapel : Matematika
Tentang : Akar dan Pangkat
Pertanyaan yg diajukan : 3
Pembahasan :

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9)

[tex] {2}^{ - 2} \div {2}^{ - 5} = {2}^{ - 2 + 5} = {2}^{3} \\ \\ {2}^{3} = 2 \times 2 \times 2 = 8[/tex]

Jawaban : B

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10)

[tex] {2}^{ - 3} \times {2}^{ - 1} = {2}^{ - 3 - 1} = {2}^{ - 4} \\ \\ {2}^{ - 4} = \frac{1}{ {2}^{4} } [/tex]

[tex] \frac{1}{ {2}^{4} } = \frac{1}{2 \times 2 \times 2 \times 2} = \frac{1}{16} [/tex]

Jawaban : D

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11)

[tex] {( {5}^{ - 1}) }^{ - 2} = {5}^{ - 1 \times ( - 2)} = {5}^{2} [/tex]

[tex] {5}^{2} = 5 \times 5 = 25[/tex]

Jawaban : B

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Hopefully this is the best for you. And please, MAKE BRAINLY GREAT AGAIN!!!

✚ Heil Manstein! ✚