I want to ask whether (-1)^1 can be written as (-1)^2/2

and..

can (-1)^2/2 be written as [ under-root (-1)^2 ] since (-1)^2/2 = (-1)^2*1/2 and 1/2 power is under-root..

Please provide your answers keeping in view the limitations of the laws of Exponentations