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Solve:x2 + 8x + 15 = 01. (x – 5) (x – 3)2. (x + 5) (x – 3)3. (x – 5) (x + 3)4. (x + 5) (x + 3) |
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Answer» Correct Answer - Option 4 : (x + 5) (x + 3) Calculation: x2 + 8x + 15 = 0 ⇒ x2 + 3x + 5x + 15 = 0 ⇒ x(x + 3) + 5(x + 3) = 0 ⇒ (x +5) (x + 3) = 0 ∴ The required answer is (x + 5) (x + 3) |
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