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positive D MCQ Questions for Class 10

positive D se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

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2 questions tagged with positive D.

Question 1/2 Hard Mathematics Quadratic Equations Nature of Roots Class 10 Level 38

यदि (D=(a-1)2+5) है, तो मूलों की प्रकृति के बारे में सही कथन क्या है?

If (D=(a-1)2+5), what is the correct statement about the nature of roots?

Explanation opens after your attempt
Correct Answer

A. हमेशा वास्तविक और भिन्नAlways real and distinct

Step 1

Concept

For every real (a), ((a-1)2+5>0). Therefore the roots will always be real and distinct.

Step 2

Why this answer is correct

The correct answer is A. हमेशा वास्तविक और भिन्न / Always real and distinct. For every real (a), ((a-1)2+5>0). Therefore the roots will always be real and distinct.

Step 3

Exam Tip

किसी भी वास्तविक (a) के लिए ((a-1)2+5>0) है। इसलिए मूल हमेशा वास्तविक और भिन्न होंगे।

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Question 2/2 Easy Mathematics Quadratic Equations Nature of Roots Class 10 Level 38

समीकरण \(x^2+7x+10=0\) में (D) किसके बराबर है?

What is (D) equal to in the equation \(x^2+7x+10=0\)?

Explanation opens after your attempt
Correct Answer

A. (9)

Step 1

Concept

Here (D=(7)2-4(1)(10)=9). (D) is positive, so the roots are distinct.

Step 2

Why this answer is correct

The correct answer is A. (9). Here (D=(7)2-4(1)(10)=9). (D) is positive, so the roots are distinct.

Step 3

Exam Tip

यहाँ (D=(7)2-4(1)(10)=9) है। (D) धनात्मक है इसलिए मूल भिन्न हैं।

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