Question

що одержимо спростивши вираз√8 +2 √18 - √50?

Answer 1

$\sqrt{8} +2\sqrt{18} -\sqrt{50} =\sqrt{4*2} +2\sqrt{9*2} -\sqrt{25*2} =2\sqrt{2} +2*3\sqrt{2} -5\sqrt{2}=2\sqrt{2} +6\sqrt{2} -5\sqrt{2} =3\sqrt{2}$