Question

Media aritmetica a numerelor:
x=(√3-1)²+2√3
y=(√5-2)(√5+2)+2016°

Answer 1

$\it x = ( \sqrt{3} -1)^{2} + 2 \sqrt{3} = ( \sqrt{3})^{2} -2 \sqrt{3} + 1 + 2 \sqrt{3} = 3 + 1 = 4 \\ \\ y = ( \sqrt{5}-2)( \sqrt{5} + 2) + 2016^{0} = ( \sqrt5})^{2} - 2^{2} + 1 = 5 -4 + 1 = 2 \\ \\ m_a= \dfrac{x+y}{2}=\dfrac{2+4}{2}=3$

Answer 2

x=3-2rad3+1+2rad3=4
y=5-4+1=2
Ma=(x+y)/2=(4+2)/2=3
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