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Verified answer
Eksponen(1/3)⁴ - (1/3)⁻² +(-3)⁻² =
= (1/3)⁴ - (3⁻¹)⁻² + (1/3)²
= (1/3)⁴ - (3)² + (1/3)²
= 1/81 - 9 + 1/9
= (1 - 729 + 9)/(81)
= -719/81