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JAWAB
◆ (3/x - 2/y)²
= (3/x)² - 2(3/x)(2/y) + (2/y)²
= (9/x²) - (12/xy) + (4/y²)
= 9x-² - 12(xy)-¹ + 4y-²
Ket:
-¹ = pangkat negatif 1
-² = pangkat negatif 2