किस विकल्प में बहुपद है और उसके सभी अशून्य पदों की घातें सम हैं?
Which option is a polynomial and all its non-zero variable terms have even powers?
Explanation opens after your attempt
B. \(3x^4-2x^2+9\)
Concept
In \(3x^4-2x^2+9\), the non-zero variable term powers are (4) and (2). Both are even and valid powers.
Why this answer is correct
The correct answer is B. \(3x^4-2x^2+9\). In \(3x^4-2x^2+9\), the non-zero variable term powers are (4) and (2). Both are even and valid powers.
Exam Tip
\(3x^4-2x^2+9\) में चर वाले अशून्य पदों की घातें (4) और (2) हैं। दोनों सम और मान्य घातें हैं।
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