Explicație pas cu pas:
[tex] \bf Ma = \dfrac{4 + \sqrt{12} + (4 - 2 \sqrt{3} ) }{2} [/tex]
[tex] \bf Ma = \dfrac{4 + \sqrt{ {2}^{2} \cdot3} + (4 - 2 \sqrt{3} ) }{2}=\dfrac{4 + 2\sqrt{3} + 4 - 2 \sqrt{3} }{2} [/tex]
[tex]\bf Ma=\dfrac{4 + 4}{2} = \dfrac{8}{2} = \red{ \underline{ \: 4 \: }}[/tex]
Varianta d)
