कौन-सा व्यंजक (z) में बहुपद है लेकिन (x) में नहीं पूछा गया है?
Which expression is a polynomial in (z), not asked in (x)?
Explanation opens after your attempt
B. \(4z^3-2z+9\)
Concept
In \(4z^3-2z+9\), the powers of (z) are (3), (1), and (0). So it is a polynomial in (z).
Why this answer is correct
The correct answer is B. \(4z^3-2z+9\). In \(4z^3-2z+9\), the powers of (z) are (3), (1), and (0). So it is a polynomial in (z).
Exam Tip
\(4z^3-2z+9\) में (z) की घातें (3), (1) और (0) हैं। इसलिए यह (z) में बहुपद है।
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