I need help. simplify. do not evaluate exponential numbers. a) (3^-2/4^3)^-1 * (3/4) b) 3^-1*2^2*3^3 / 2^2*3^2 + (3/2)^0 c) (7^4*6^3*7^-5/7^-3*6^0)^2 / (6^5*7^-2/6^-4)^3 ************************************************ Responding to c), the SEEMINGLY most complex of the 3. c)= = = = = = = = , or