यदि (d=-1), तो ((d+1)x-5+(2d+3)x-2+7) की डिग्री क्या होगी?
If (d=-1), what will be the degree of ((d+1)x-5+(2d+3)x-2+7)?
Explanation opens after your attempt
B. (2)
Concept
Putting (d=-1) makes the coefficient of \(x^5\) equal to (0) and the coefficient of \(x^2\) equal to (1). So the highest power is (2).
Why this answer is correct
The correct answer is B. (2). Putting (d=-1) makes the coefficient of \(x^5\) equal to (0) and the coefficient of \(x^2\) equal to (1). So the highest power is (2).
Exam Tip
(d=-1) रखने पर \(x^5\) का गुणांक (0) और \(x^2\) का गुणांक (1) होता है। इसलिए सबसे बड़ी घात (2) है।
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