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Question Hard Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 27

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
Correct Answer

C. (k=-1)

Step 1

Concept

Here (D=4-4k). For (k=-1), (D=8), which is positive and not a perfect square.

Step 2

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.

Step 3

Exam Tip

यहाँ (D=4-4k) है। (k=-1) पर (D=8), जो धनात्मक पूर्ण वर्ग नहीं है।

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