यदि (p(x)=(a-2)x-4+(a+1)x-3+6) को ठीक घन बहुपद बनाना हो, तो (a) का मान क्या होगा?
If (p(x)=(a-2)x-4+(a+1)x-3+6) is to be exactly a cubic polynomial, what is the value of (a)?
Explanation opens after your attempt
A. (2)
Concept
For exactly cubic, the coefficient of \(x^4\) must be zero and the coefficient of \(x^3\) must remain non-zero. From (a-2=0), (a=2).
Why this answer is correct
The correct answer is A. (2). For exactly cubic, the coefficient of \(x^4\) must be zero and the coefficient of \(x^3\) must remain non-zero. From (a-2=0), (a=2).
Exam Tip
ठीक घन के लिए \(x^4\) का गुणांक शून्य होना चाहिए और \(x^3\) का गुणांक अशून्य रहना चाहिए। (a-2=0) से (a=2) मिलता है।
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