Question

2 raiz quadrada de 12- raiz quadrada de 75 + raiz quadrada de 27

Answer 1

$<var>2\sqrt {12}-\sqrt{75}+\sqrt{27}=2\cdot2\sqrt{3}-5\sqrt{3}+3\sqrt{3}=2\sqrt{3}</var>$

Answer 2

$2\sqrt{12} - \sqrt{75} + \sqrt{27} = \\\\ 2\sqrt{4 \times 3} - \sqrt{25 \times 3} + \sqrt{9 \times 3} = \\\\ 2 \times 2\sqrt{3} - 5\sqrt{3} + 3\sqrt{3} = \\\\ 4\sqrt{3} - 2\sqrt{3} = \\\\ \boxed{2\sqrt{3}}$