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The solution set satisfying the inequality, √(21 - 4a - a^2)/√(a + 1) ≤ 1 (A) [- 7, - 1)

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The solution set satisfying the inequality, √(21 - 4a - a2)/√(a + 1) ≤ 1

(A) [- 7, - 1) 

(B) [2, 3] 

(C) [2, ∞) 

(D) [- 7, 0)

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Correct option (A) (B)

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