JEE Main 2012 — Quadratic Equation Question with Solution
JEE Main 2012 (12 May Online)
Question
If the sum of the square of the roots of the equation is least, then is equal to
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
Given equation is
Let and be two roots of quadratic equation.
Now, By putting
and in (A) one by one
We get least value of at
Hence,
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This is a previous-year question from JEE Main 2012, covering the Quadratic Equation chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.