Dacă x+1/x =3 să se calculeze x²+1/x²

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28 Agustus 2025 matematica 5 minute
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Dacă x+1/x =3 să se calculeze x²+1/x²
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(x+1/x)²=9
x²+2x*(1/x)+1/x²=9
x²+2+1/x²=9
x²+1/x²=7
Răspunsul a fost dat în data 28 Agustus 2025

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