Question

$\sqrt{275} - \sqrt{99}$

Answer 1

$\sqrt[]{275} - \sqrt[]{99} = \\ \\ \sqrt[]{ {5}^{2} \times 11} - \sqrt[]{ {3}^{2} \times 11 } = \\ \\ 5 \sqrt{11} - 3 \sqrt{11} = \\ \\ (5 - 3) \sqrt{11 }= \\ \\ 2 \sqrt{11}$
Espero ter ajudado

;D