b) [5 + (-3)]*3 = 2*3 = 6
c) -2*[3-36/(-9)] - 2*12 = -2*(3+4) - 24 = -2*7 - 24 = -14 - 24 = -38
d) [(-5)^2 * (-5)^4 * (-5)^3]^5 / (-5)^43 = [(-5)^9]^5 / (-5)^43 = (-5)^45 / (-5)^43 = (-5)^2 = 25
