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In the given questions, two equations numbered l and II are given. You have to solve both the equations and mark the appropriate answer.I. x2 = 49II. y2 – 16y + 63 = 01. x > y2. x ≤ y3. No relation in x and y or x = y4. x ≥ y5. x < y |
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Answer» Correct Answer - Option 2 : x ≤ y Calculations: From I, x2 = 49 ⇒ x = –7, 7 From II, y2 – 16y + 63 = 0 ⇒ y2 – 9y – 7y + 63 = 0 ⇒ y(y – 9) – 7(y – 9) = 0 ⇒ (y – 9)(y – 7) = 0 Taking, ⇒ y – 9 = 0 or y – 7 = 0 ⇒ y = 9 or y = 7 Comparison between x and y (via Tabulation):
∴ x ≤ y. |
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