Question

quanto é √8-√18+2√2?​

Answer 1

Resposta:

$\sqrt{8} -\sqrt{18} +2\sqrt{2} =\\ \\ \sqrt{2^2.2} -\sqrt{2.3^2} +2\sqrt{2} =\\ \\ 2\sqrt{2} -3\sqrt{2} +2\sqrt{2} =\\ \\ 4\sqrt{2} -3\sqrt{2} =\sqrt{2}$