Question

help

Answer 1

Answer 2

\(A=\sqrt{4+\sqrt{7}}-\sqrt{4-\sqrt{7}}\)

\(A=\sqrt{2+2,6457...}-\sqrt{2-2,6457}\)

\(A=\sqrt{4,6457}-\sqrt{0,6457}\)

\(A=\sqrt{4}\)

\(A=2\)