When there is an exponent outside a set of parenthesize we multiple all the exponents inside
the parenthesize by that exponent.
generalization statement (xr/tp)m = xmr/tmp
Another example is (ta3/b2)4 = (t1x4a3x4)/b2x4 = (t4a12)/b8
Notice again that the t has an exponent of 1 which we do not write but must remember that it is there! return