2x1/9 pangkat -1/2 - 16 pangkat 1/4+125pangkat 1/3=

[tex]2 \times ({ \frac{1}{9} })^{ - \frac{1}{2} } - {16}^{ \frac{1}{4} } + {125}^{ \frac{1}{3} } \\ = 2 \times \frac{ {1}^{ - \frac{1}{2} } }{ {9}^{ \frac{ - 1}{2} } } - \sqrt[4]{16} + \sqrt[3]{125} \\ = 2 \times \frac{ {9}^{\frac{1}{2} } }{ {1}^{ \frac{1}{2} } } - \sqrt[4]{ {2}^{4} } + \sqrt[3]{ {5}^{3} } \\ = 2 \times \frac{ \sqrt{9} }{ \sqrt{1} } - 4 + 5 \\ = 2 \times 3 - 4 + 5 \\ = 6 - 4 + 5 \\ = 7[/tex]