यदि (r=3), तो (\(r^2-9\)x-7+(r-1)x-4+x-2) की डिग्री क्या होगी?
If (r=3), what will be the degree of (\(r^2-9\)x-7+(r-1)x-4+x-2)?
Explanation opens after your attempt
B. (4)
Concept
For (r=3), the coefficient of \(x^7\) is (0) and the coefficient of \(x^4\) is (2). Therefore the degree is (4).
Why this answer is correct
The correct answer is B. (4). For (r=3), the coefficient of \(x^7\) is (0) and the coefficient of \(x^4\) is (2). Therefore the degree is (4).
Exam Tip
(r=3) पर \(x^7\) का गुणांक (0) और \(x^4\) का गुणांक (2) होता है। इसलिए डिग्री (4) है।
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