Let x satisfy x − √121 = 0 and y be the greater real root of y^2 − 121 = 0. Compare x and y.

Difficulty: Easy

Correct Answer: If x ≥ y

Explanation:


Introduction / Context:
We compare specific solutions: x is uniquely determined by a linear radical equation; y comes from a quadratic with two symmetric roots. By convention, we take the greater real root for y to avoid ambiguity and then compare numerically.


Given Data / Assumptions:

  • x − √121 = 0 ⇒ x = √121 = 11.
  • y^2 − 121 = 0 ⇒ y = ±11, take greater y = 11.


Concept / Approach:
Evaluate both exactly, then choose the correct relation symbol.


Step-by-Step Solution:

x = 11.y (greater root) = 11.Thus x = y, which satisfies x ≥ y (and also x ≤ y). The offered relation set includes ≥.


Verification / Alternative check:
Direct substitution confirms equality.


Why Other Options Are Wrong:
Strict inequalities (x > y or x < y) are false because the values are equal.


Common Pitfalls:
Forgetting to select the greater root for y or mis-evaluating √121.


Final Answer:
If x ≥ y

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