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Răspuns :

x² ˣ ³ = x⁶
a⁴ ˣ ³ = x¹²
a² ˣ ⁽ ⁻⁵⁾ = a ⁻ ¹⁰
x²⁾³ = x²ˣ³ = x⁶

a⁴⁾³ = x⁴ˣ³ = x¹²

a²⁾⁽⁻⁵⁾ = a²ˣ⁽⁻⁵⁾ = a⁻¹⁰ = 1/a¹⁰