कौन-सा व्यंजक (x) में बहुपद नहीं है, हालांकि उसमें \(x^4\) पद है?
Which expression is not a polynomial in (x), even though it has an \(x^4\) term?
Explanation opens after your attempt
Correct Answer
B. \(x^4+\frac{2}{x}-1\)
Concept
\(\frac{2}{x}=2x^{-1}\), where the variable has a negative power. One invalid term prevents the whole expression from being a polynomial.
Why this answer is correct
The correct answer is B. \(x^4+\frac{2}{x}-1\). \(\frac{2}{x}=2x^{-1}\), where the variable has a negative power. One invalid term prevents the whole expression from being a polynomial.
Exam Tip
\(\frac{2}{x}=2x^{-1}\) है, जिसमें चर की घात ऋणात्मक है। एक अमान्य पद पूरे व्यंजक को बहुपद नहीं रहने देता।
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