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In the given question, two equations are numbered l and II as given. Solve both the equations and mark the appropriate answer.I. x2 + 22x + 120 = 0II. 10y2 + 23y + 12 = 01. x > y2. x < y3. x ≥ y4. x ≤ y5. x = y or relationship between x and y cannot be established. |
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Answer» Correct Answer - Option 2 : x < y Calculation∶ I. x2 + 22x + 120 = 0 ⇒ x2 + 12x + 10x + 120 = 0 ⇒ x(x + 12) + 10(x + 12) = 0 ⇒ (x + 12)(x + 10) = 0 ⇒ x = -12, -10 II. 10y2 + 23y + 12 = 0 ⇒ 10y2 + 15y + 8y + 12 = 0 ⇒ 5y(2y + 3) + 4(2y + 3) = 0 ⇒ (2y + 3)(5y + 4) = 0 ⇒ y = -3/2, -4/5
∴ x < y |
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