यदि (p(x)=(a+3)x-9+\(a^2-9\)x-6+4x-2-5) की डिग्री (2) है, तो (a) का सही मान कौन सा है?
If the degree of (p(x)=(a+3)x-9+\(a^2-9\)x-6+4x-2-5) is (2), which value of (a) is correct?
Explanation opens after your attempt
B. (a=-3)
Concept
For degree (2), both \(x^9\) and \(x^6\) terms must vanish. At (a=-3), both coefficients become (0).
Why this answer is correct
The correct answer is B. (a=-3). For degree (2), both \(x^9\) and \(x^6\) terms must vanish. At (a=-3), both coefficients become (0).
Exam Tip
डिग्री (2) के लिए \(x^9\) और \(x^6\) दोनों पद हटने चाहिए। (a=-3) पर दोनों गुणांक (0) हो जाते हैं।
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