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Lalu operasikan :
((3 pangkat 12+a) × (3 pangkat 4a-14)) : 3 pangkat 5a
⇒ (3 pangkat 12+a+4a-14) : 3 pangkat 5a
⇒ 3 pangkat 5a-2 : 3 pangkat 5a
⇒ 3 pangkat -2 = 1/9
2) (1/1+n)⁵ × (1/1-n)⁻⁷ × (n-1/1+n)⁻⁶
⇒(1/1+n)⁵ × (1-n/1)⁷ × (1+n/n-1)⁶
⇒(1/1+n⁵) × (1-n⁷) × (1+n⁶/n⁶+1)
⇒ (1/1+n⁵) × (1-n⁷) × 1
⇒ (1-n⁷/1+n⁵)
Ini jawabannya , yg td salah . Semoga membantu :)
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2)
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= (1+n)(-1)(1-n)
= - (1+n)(1-n)
= -(1-n²)
= n²-1