Jawab:
Nomor 7:
Bagian e:
[tex]( \frac{1}{4} ) {}^{4} \times ( - \frac{1}{3} ) {}^{2} \\ = \frac{ {1}^{4} }{ {4}^{4} } \times \frac{ {( - 1)}^{2} }{ { (- 3)}^{2} } \\ = \frac{1 \times 1 \times 1 \times 1}{4 \times 4 \times 4 \times 4} \times \frac{( - 1) \times ( - 1)}{( - 3) \times ( - 3)} \\ = \frac{1}{256} \times \frac{1}{9} \\ = \frac{1 \times 1}{256 \times 9} \\ = \frac{1}{2304} [/tex]
Bagian f:
[tex]( \frac{1}{4} ) {}^{4} \div - ( \frac{1}{3} ) {}^{2} \\ = \frac{ {1}^{4} }{ {4}^{4} } \div - \frac{ {1}^{2} }{ { 3}^{2} } \\ = \frac{1 \times 1 \times 1 \times 1}{4 \times 4 \times 4 \times 4} \div - \frac{ 1 \times 1}{ 3 \times 3} \\ = \frac{1}{256} \div - \frac{1}{9} \\ = \frac{1}{256} \times - \frac{9}{1} \\ = - \frac{9}{256} [/tex]
Nomor 8:
Bagian a:
[tex] {7}^{x} = 343 \\ {7}^{x} = {7}^{3} \\ < = > x = 3[/tex]
Bagian b:
[tex] {2}^{x} = 64 \\ {2}^{x} = {2}^{6} \\ < = > x = 6[/tex]
Bagian c:
[tex] {10}^{x} = 10000 \\ {10}^{x} = {10}^{4} \\ < = > x = 4[/tex]
Bagian d:
[tex] {5}^{x} = 625 \\ {5}^{x} = {5}^{4} \\ < = > x = 4[/tex]
[answer.2.content]
