Question

Media geometrica a numerelor 4+√7 si 4-√7

Answer 1

√(4+√7)(4-√7)=√16-7=√9=3

Answer 2

Mg=$\sqrt{a×b}$ 
Mg = $\sqrt{(4- \sqrt{7})(4+ \sqrt{7}) }$
Mg = $\sqrt{4²-√7²}$
Mg = $\sqrt{16-7}$
Mg = √9
Mg= 3