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In the following question, two equations numbered I and II are given. You have to solve both the equations and give answer:I. 11x2 + 18x + 7 = 0II. 3y2 + 2y - 1 = 01. x > y2. x ≥ y3. x < y4. x ≤ y5. x = y or the relation cannot be determined |
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Answer» Correct Answer - Option 5 : x = y or the relation cannot be determined i. 11x2 + 18x + 7 = 0 ⇒ 11x2 + 11x + 7x + 7 = 0 ⇒ 11x(x + 1) + 7(x + 1) = 0 ⇒ (x + 1)(11x + 7) = 0 ⇒ x = -1, -7/11
ii. 3y2 + 2y - 1 = 0 ⇒ 3y2 + 3y - y - 1 = 0 ⇒ 3y(y + 1) - 1(y + 1) = 0 ⇒ (y + 1) (3y - 1) = 0 ⇒ y = -1, 1/3
Hence, the relation cannot be determined. |
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