कौन-सा व्यंजक (x) में बहुपद है और उसकी सभी अशून्य चर-घातें सम हैं?
Which expression is a polynomial in (x) and has all non-zero variable powers even?
Explanation opens after your attempt
A. \(x^6-3x^4+2x^2-5\)
Concept
It has powers (6), (4), (2), and (0). All powers are valid and the non-zero variable powers are even.
Why this answer is correct
The correct answer is A. \(x^6-3x^4+2x^2-5\). It has powers (6), (4), (2), and (0). All powers are valid and the non-zero variable powers are even.
Exam Tip
इसमें घातें (6), (4), (2) और (0) हैं। सभी घातें मान्य हैं और अशून्य चर-घातें सम हैं।
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