Question

Rút gọn

\(\sqrt{12}+2\sqrt{27}+3\sqrt{75}-9\sqrt{48}\)

\(2\sqrt{5}-\sqrt{125}-\sqrt{80}+\sqrt{605}\)

\(\sqrt{25.9}+\sqrt{4.16}\)

\(\left(15+\sqrt{3}\right)^2-\left(\sqrt{5}-\sqrt{4}\right)^2\)

\(5\sqrt{2}-\sqrt{18}+\sqrt{32}\)

\(9\sqrt{2}-3\sqrt{8}-2\sqrt{2}\)

\(6\sqrt{3}+\sqrt{27}-\sqrt{12}\)

\(\sqrt{\left(\sqrt{5}-2\right)^2}-\sqrt{20}+\sqrt{\left(-3\right)^2}\)

giúp tui vs mai tui cần rùi 

Answer 1

a: \(=2\sqrt{3}+6\sqrt{3}+15\sqrt{3}-36\sqrt{3}=-13\sqrt{3}\)

b: \(=2\sqrt{5}-5\sqrt{5}-4\sqrt{5}+11\sqrt{5}=4\sqrt{5}\)

c: \(=15+8=23\)

e: \(=5\sqrt{2}-3\sqrt{2}+4\sqrt{2}=6\sqrt{2}\)