যদি P ∶ Q = 3 ∶ 2 হয়, তাহলে (P2 - Q2) ∶ (P2 + Q2) এর অনুপাত কত হবে? 

1
5 ∶ 13
2
13 ∶ 5
3
10 ∶ 9
4
4 ∶ 9

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