Obliczenia
[tex]\frac{1}{4}\sqrt{128}-\sqrt{32}+\sqrt{50}=\frac{1}{4}\sqrt{64\cdot2}-\sqrt{16\cdot2}+\sqrt{25\cdot2}=\\\\=\frac{1}{4}\sqrt{8^2\cdot2}-\sqrt{4^2\cdot2}+\sqrt{5^2\cdot2}=\\\\=\frac{1}{4}\cdot8\sqrt2-4\sqrt2+5\sqrt2=2\sqrt2+\sqrt2=3\sqrt2\\\\\huge\boxed{\text{Odp}. \ \text{C}}[/tex]