[tex]a = \sqrt{12 } - 2 \sqrt{27} + 5 \sqrt{3} + \sqrt{48} + 2 \sqrt{75} \\ a = 2 \sqrt{3} - 6 \sqrt{3} + 5 \sqrt{3} + 4 \sqrt{3} + 10 \sqrt{3} \\ a = 5 \sqrt{ 3} [/tex]
