Write the dimensions of `a//b` in the relation `P = ( a - t^(2))/( bx)` , where `P` is the pressure , `x` is the distance , and `t` is the time .

Explanation

`[P] = [(a)/(bx)] - [(ct^(2))/(bx)]`
By principle of Homongeneity,
`[(a)/(bx)]` should represent pressure
`:. [(a)/(b)] (1)/(L) = [ML^(-1)T^(-2)] implies [(a)/(b)] = [ML^(-2)]`