Simplify: \(\sqrt 8 - 6\sqrt 8 + 15\sqrt 8 \)
\(20\sqrt 2 \)
Simplify: \(\sqrt {24} + \sqrt {54} \)
\(5\sqrt 6 \)
Simplify: \(\sqrt 2 + \sqrt 8 + \sqrt {32} + \sqrt {128} \)
\(15\sqrt 2 \)
Simplify: \(5\sqrt 7 + 7\sqrt 5 - \sqrt {20} - \sqrt {28} \)
\(3\sqrt 7 + 5\sqrt 5 \)
Simplify: \(\sqrt {999} + \sqrt {99} - \sqrt {444} - \sqrt {44} \)
\(\sqrt {111} + \sqrt {11} \)
