यदि (r=0), तो (\(r^2-r\)x-3+(r+2)x-2+1) की डिग्री क्या है?
If (r=0), what is the degree of (\(r^2-r\)x-3+(r+2)x-2+1)?
Explanation opens after your attempt
B. (2)
Concept
Putting (r=0), the coefficient of \(x^3\) is (0) and the coefficient of \(x^2\) is (2). Therefore the degree is (2).
Why this answer is correct
The correct answer is B. (2). Putting (r=0), the coefficient of \(x^3\) is (0) and the coefficient of \(x^2\) is (2). Therefore the degree is (2).
Exam Tip
(r=0) रखने पर \(x^3\) का गुणांक (0) और \(x^2\) का गुणांक (2) होता है। इसलिए डिग्री (2) है।
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