यदि \(x^2+qx+10=0\) के वास्तविक मूल नहीं हैं तो (q) के लिए सही शर्त क्या है?

If \(x^2+qx+10=0\) has no real roots, what is the correct condition for (q)?

Explanation opens after your attempt
Correct Answer

A. \(q^2<40\)

Step 1

Concept

For no real roots, (D<0) is needed. So \(q^2-40<0\), that is \(q^2<40\).

Step 2

Why this answer is correct

The correct answer is A. \(q^2<40\). For no real roots, (D<0) is needed. So \(q^2-40<0\), that is \(q^2<40\).

Step 3

Exam Tip

वास्तविक मूल नहीं होने के लिए (D<0) चाहिए। इसलिए \(q^2-40<0\), अर्थात \(q^2<40\)।

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Mathematics Answer, Explanation and Revision Hints

यदि \(x^2+qx+10=0\) के वास्तविक मूल नहीं हैं तो (q) के लिए सही शर्त क्या है? / If \(x^2+qx+10=0\) has no real roots, what is the correct condition for (q)?

Correct Answer: A. \(q^2<40\). Explanation: वास्तविक मूल नहीं होने के लिए (D<0) चाहिए। इसलिए \(q^2-40<0\), अर्थात \(q^2<40\)। / For no real roots, (D<0) is needed. So \(q^2-40<0\), that is \(q^2<40\).

Which concept should I revise for this Mathematics MCQ?

For no real roots, (D<0) is needed. So \(q^2-40<0\), that is \(q^2<40\).

What exam hint can help solve this Mathematics question?

वास्तविक मूल नहीं होने के लिए (D<0) चाहिए। इसलिए \(q^2-40<0\), अर्थात \(q^2<40\)।