Where 'a', 'b', 'n', and 'c' are constant numbers. The ranges of the parameters are:

n = [0,0.2]

a = [0.5,1.5]

b = [-0.5,0.5]

c = [0.5,1.5]

x = [0,0.6]

I would like rewrite this expression such that it will look as follows: (m*x+n)^k. The final expression can be an approximation of the first expression.