Question

ma poate ajuta cineva??? subiectul 2 , tot , cu explicatie (dau coroana)

Answer 1

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$\frac{ ( \sqrt{3}-1 )^{2}+ \sqrt{12} }{( \sqrt{5}-1 )( \sqrt{5+1} )} + (\frac{1}{3})^{-2}$
$\frac{3-2 \sqrt{3}+1+ \sqrt{4*3}}{ \sqrt{5} ^{2}- 1^{2} }+ \frac{ 3^{2} }{ 1^{2} }$
$\frac{3-2 \sqrt{3}+1+2 \sqrt{3} }{5-1}+ \frac{9}{1}$
$\frac{4}{4} +9=$
1+9=10∈N