Question

rút gọn các biểu thức 

A= \(\sqrt{11-2\sqrt{10}}\)

Answer 1

\(A=\sqrt{11-2\sqrt{10}}=\sqrt{\left(\sqrt{10}-1\right)^2}=\sqrt{10}-1\)

Answer 2

\(A=\sqrt{11-2\sqrt{10}=\sqrt{ }\left(\sqrt{10-1}\right)=\sqrt{ }10-1}\)

Answer 3

A=\(\sqrt{11-2\sqrt{10}=\sqrt{\left(\sqrt{10-1}\right)^2}=\sqrt{10-1}}\)

Answer 4

A=\(\sqrt{11-2\sqrt{10=\sqrt{\left(10-1\right)^2=\sqrt{10-1}}}}\)