जर a ∶ b = 2 ∶ 3, तर (b2 + 2a2) ∶ (b2 - 2a2) चे मूल्य काय आहे?

1
17 ∶ 1
2
20 ∶ 11
3
18 ∶ 1
4
15 ∶ 2

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