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= Q(P - 4Q) per (P + 4)(P - 4Q)
= Q per (P + 4)
NOTE
itu difaktorkan lalu (P - 4Q) di coret
JAWAB
⇨ (PQ - 4Q²)/ (P² - 16Q²)
⇨ Q(P - 4Q) / (P - 4Q)(P + 4Q)
⇨ Q / (P + 4Q)
⇨ 1 / (P/Q + 4)