Question

упростить выражение:(3√8-9√18+0,2√50):(-2√2)​

Answer 1

$\frac{3\sqrt{8}-9\sqrt{18}+0,2\sqrt{50}}{-2\sqrt{2}}=\frac{3\sqrt{4*2}-9\sqrt{9*2}+0,2\sqrt{25*2}}{-2\sqrt{2}}=-\frac{3*2\sqrt{2}-9*3\sqrt{2}+0,2*5\sqrt{2}}{2\sqrt{2} }=\\\\=-\frac{6\sqrt{2}-27\sqrt{2}+\sqrt{2}}{2\sqrt{2} } =-\frac{-20\sqrt{2} }{2\sqrt{2}}=\boxed{10}$