Question

a) căn9-4căn5 -căn5

b)căn3-2căn2  -  căn3+2căn2

c)căn11-6căn2   +  3+căn2

          giải hộ mik vs 

đang cần gấp

 

Answer 1

\(a,\sqrt{9}-4\sqrt{5}-\sqrt{5}=3-3\sqrt{5}\)

\(b,\sqrt{3}-2\sqrt{2}-\sqrt{3}+2\sqrt{2}=0\)

Answer 2

a) \(\sqrt{9}-4\sqrt{5}-\sqrt{5}=3-5\sqrt{5}\)

b) \(\sqrt{3}-2\sqrt{2}-\sqrt{3}+2\sqrt{2}=0\)

c) \(\sqrt{11}-6\sqrt{2}+3+\sqrt{2}=\sqrt{11}-5\sqrt{2}+3\)

Answer 3

​\(a,\sqrt{9}-4\sqrt{5}-\sqrt{5}=\sqrt{3^2}-4\sqrt{5}-\sqrt{5}=3-5\sqrt{5}\)​

\(b,\sqrt{3}-2\sqrt{2}-\sqrt{3}+2\sqrt{2}=0\)

\(c,\sqrt{11}-6\sqrt{2}+3+\sqrt{2}=\sqrt{11}-5\sqrt{2}+3\)