The exponential form of 1(2)3 × (3)−3 is given by which of the following expressions?
63
6−3
4−2
5−3
1(2)3 × (3)−3
= 2−3 × (3)−3 (∵a−m = 1am)
= 6−3 (∵am×bm = (a×b)m)
Which of the given options represents the exponential form of 18×(3)−3 ?