tolong krjakan ya nmr 3 dan 4

[tex] { ({x}^{ - 2 \frac{1}{3} }) }^{ \frac{1}{2} } \\ = { ({x}^{ \frac{ - 7}{3} }) }^{ \frac{1}{2} } \\ = {x}^{ \frac{ - 7}{3} \times \frac{1}{2} } \\ = {x}^{ \frac{ - 7}{6} } \\ = \frac{1}{ {x}^{ \frac{7}{6} } } \\ = \frac{1}{ \sqrt[6]{ {x}^{7} } } \\ = \frac{1}{x \sqrt[6]{x} } [/tex]
[tex]2 \sqrt{3} + \sqrt{27 } + \sqrt{75} - \sqrt{12} \\ = 2 \sqrt{3} + \sqrt{9 \times 3} + \sqrt{25 \times 3} - \sqrt{4 \times 3} \\ = 2 \sqrt{3} + \sqrt{9} \sqrt{3} + \sqrt{25} \sqrt{3} - \sqrt{4} \sqrt{3} \\ = 2 \sqrt{3} + 3 \sqrt{3} + 5 \sqrt{3} - 2 \sqrt{3} \\ = (2 + 3 + 5 - 2) \sqrt{3} \\ = 8 \sqrt{3} [/tex]
Semoga dapat dipahami