C-04-Q086mediumsingle_mcq(3m)m−1⋅(3m−1)m+1(3m)^{m-1} \cdot (3^{m-1})^{m+1}(3m)m−1⋅(3m−1)m+1 exponent of 333 in product equals—a(m−1)+(m2−1)(m-1) + (m^2 - 1)(m−1)+(m2−1)bm2+