किस स्थिति में ((k+2)x-3+(5-k)x-2+7) की घात (2) होगी?
Under which condition will ((k+2)x-3+(5-k)x-2+7) have degree (2)?
Explanation opens after your attempt
D. (k=-2)
Concept
For degree (2), the coefficient of \(x^3\) must be zero and the coefficient of \(x^2\) must remain non-zero. From (k+2=0), (k=-2).
Why this answer is correct
The correct answer is D. (k=-2). For degree (2), the coefficient of \(x^3\) must be zero and the coefficient of \(x^2\) must remain non-zero. From (k+2=0), (k=-2).
Exam Tip
घात (2) के लिए \(x^3\) का गुणांक शून्य होना चाहिए और \(x^2\) का गुणांक अशून्य रहना चाहिए। (k+2=0) से (k=-2) मिलता है।
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