Cevap:
Adım adım açıklama:
a²-12a+2=0
2=12a-a²
[tex]a+\frac{2}{a} = a+ \frac{12a-a^{2} }{a} \\\\a+\frac{2}{a} = a+ 12 -a = 12\\\\(a+\frac{2}{a} )^{2}=12^{2}\\\\a^{2} + 2.a.\frac{2}{a} + (\frac{2}{a}) ^{2} = 144\\\\a^{2} + 4+ \frac{4}{a^{2} } = 144\\\\a^{2} + \frac{4}{a^{2} } = 140[/tex]