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In the given question, two equations numbered l and II are given. You have to solve both the equations and mark the appropriate answer-I. x2 = 4II. y2 - 6y + 8 = 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 4 : x ≤ y Given: I. x2 = 4 II. y2 – 6y + 8 = 0 Concept used: Using factorization method. Calculation: x2 = 4 ⇒ x2 – 4 = 0 ⇒ (x – 2)(x + 2) = 0 ⇒ (x – 2) = 0 or (x + 2) = 0 ⇒ x = 2 or x = -2 ⇒ x = -2, 2 y2 – 6y + 8 = 0 ⇒ y2 – 4y – 2y + 8 = 0 ⇒ y(y – 4) – 2(y – 4) = 0 ⇒ (y – 4)(y – 2) = 0 ⇒ (y – 4) = 0 or (y – 2) = 0 ⇒ y = 4 or y = 2 ⇒ y = 2, 4 ∴ x ≤ y. Comparison between x and y (via Tabulation): ∴ x ≤ y. |
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