Hard Mathematics Quadratic Equations Class 10 Level 32

यदि समीकरण (x-2-4x+(m+4)=0) के वास्तविक मूल नहीं हैं तो (m) के लिए कौन सी शर्त सही है?

If (x-2-4x+(m+4)=0) has no real roots, which condition on (m) is correct?

Explanation opens after your attempt
Correct Answer

A. (m>0)

Step 1

Concept

For no real roots (D<0) is required. From (16-4(m+4)<0), we get (m>0).

Step 2

Why this answer is correct

The correct answer is A. (m>0). For no real roots (D<0) is required. From (16-4(m+4)<0), we get (m>0).

Step 3

Exam Tip

वास्तविक मूल नहीं होने के लिए (D<0) चाहिए। (16-4(m+4)<0) से (m>0) मिलता है।

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Mathematics Answer, Explanation and Revision Hints

यदि समीकरण (x-2-4x+(m+4)=0) के वास्तविक मूल नहीं हैं तो (m) के लिए कौन सी शर्त सही है? / If (x-2-4x+(m+4)=0) has no real roots, which condition on (m) is correct?

Correct Answer: A. (m>0). Explanation: वास्तविक मूल नहीं होने के लिए (D<0) चाहिए। (16-4(m+4)<0) से (m>0) मिलता है। / For no real roots (D<0) is required. From (16-4(m+4)<0), we get (m>0).

Which concept should I revise for this Mathematics MCQ?

For no real roots (D<0) is required. From (16-4(m+4)<0), we get (m>0).

What exam hint can help solve this Mathematics question?

वास्तविक मूल नहीं होने के लिए (D<0) चाहिए। (16-4(m+4)<0) से (m>0) मिलता है।

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