Difficulty: Medium
Correct Answer: x ≤ y
Explanation:
Introduction / Context:We repair the stem by explicitly defining the comparison target: the larger roots of each quadratic. Then we compute those roots and compare. If x is strictly less than y, the statement x ≤ y is true as well.
Given Data / Assumptions:
Concept / Approach:Factor or use the quadratic formula to find each equation’s larger root. Compare them exactly to avoid sign mistakes, then choose the most accurate relation provided among the options.
Step-by-Step Solution:
x^2 + 10x + 24 = 0 ⇒ (x + 6)(x + 4) = 0 ⇒ roots −6, −4 ⇒ greater root x = −4 4y^2 − 17y + 18 = 0 ⇒ Δ = 289 − 288 = 1 ⇒ roots (17 ± 1)/8 ⇒ y = 2 or 9/4 = 2.25 ⇒ greater root y = 2.25 Comparison: −4 < 2.25 ⇒ x < y. Among given options, x ≤ y is true.Verification / Alternative check:Substitute the computed roots back into the original equations to confirm correctness before comparing.
Why Other Options Are Wrong:x ≥ y and x > y contradict the numerical comparison; “cannot be established” is incorrect because both larger roots are uniquely determined.
Common Pitfalls:Forgetting that the “greater root” for a quadratic with both negative roots is the one closer to zero.
Final Answer:x ≤ y
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