The dimensional formula of axb in the relation P=b−x2at is, where P is power, x is distance and t is time
M−1 L2T2
M L2T2
ML2T−2
M−1LT2
if x is distance b=L2p=power= L2at
ML2T−3=L2aT
a=M−1T2 a×b=M−1T2 L2