किस मान पर \(x^2-2x+k\) के शून्यक वास्तविक और अपरिमेय होंगे?
For which value of (k) will the zeroes of \(x^2-2x+k\) be real and irrational?
Explanation opens after your attempt
C. (k=-1)
Concept
Here (D=4-4k). For (k=-1), (D=8), which is positive and not a perfect square.
Why this answer is correct
The correct answer is C. (k=-1). Here (D=4-4k). For (k=-1), (D=8), which is positive and not a perfect square.
Exam Tip
यहाँ (D=4-4k) है। (k=-1) पर (D=8), जो धनात्मक पूर्ण वर्ग नहीं है।
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