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:
Concept / Approach:
Evaluate both exactly, then choose the correct relation symbol.
Step-by-Step Solution:
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
Discussion & Comments