यदि (x-2-2(a+4)x+a-2+8a+15=0) है, तो मूलों की प्रकृति क्या होगी?
If (x-2-2(a+4)x+a-2+8a+15=0), what will be the nature of roots?
Explanation opens after your attempt
A. हमेशा वास्तविक, परिमेय और भिन्नAlways real, rational and distinct
Concept
Here (D=4(a+4)2-4\(a^2+8a+15\)=4). Therefore roots are always real, rational and distinct.
Why this answer is correct
The correct answer is A. हमेशा वास्तविक, परिमेय और भिन्न / Always real, rational and distinct. Here (D=4(a+4)2-4\(a^2+8a+15\)=4). Therefore roots are always real, rational and distinct.
Exam Tip
यहाँ (D=4(a+4)2-4\(a^2+8a+15\)=4) है। इसलिए मूल हमेशा वास्तविक, परिमेय और भिन्न हैं।
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