bentuk sederhana dari

[tex] = \frac{6}{ \sqrt{7} - 2} \times \frac{ \sqrt{7} + 2}{ \sqrt{7} + 2} \\ \\ = \frac{6 \sqrt{7} + 12}{7 - 4} \\ \\ = \frac{6 \sqrt{7} + 12}{3} \\ \\ = 2 \sqrt{7} + 4[/tex]

Jawaban → D