Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Binomial Theorem Binomial Expansion
Find the coefficient of x2 in the expansion of \(\left(3x-\frac{1}{x}\right)^6\).
1
405
2
7290
3
2430
4
More than one of the above
5
None of the above