Question

√18 - 2√32 + 3√50 -4√8

Answer 1

\(\sqrt{18}-2\sqrt{32}+3\sqrt{50}-4\sqrt{8}\)

\(=3\sqrt{2}-8\sqrt{2}+15\sqrt{2}-8\sqrt{2}\)

\(=-5\sqrt{2}+15\sqrt{2}-8\sqrt{2}\)

\(=10\sqrt{2}-8\sqrt{2}\)

\(=2\sqrt{2}\)

Answer 2

\(\sqrt{18}-2\sqrt{32}+3\sqrt{50}-4\sqrt{8}\)

\(=3\sqrt{2}-4\sqrt{8}+15\sqrt{2}-4\sqrt{8}\)

\(=3\sqrt{2}+15\sqrt{2}-4\sqrt{8}-4\sqrt{8}\)

\(=18\sqrt{2}-8\sqrt{2}-8\sqrt{2}\)

\(=2\sqrt{2}\)