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b) -3{2}+(-2{2}) -(-3+(-2) )= -9 - 4 + 5 = -8
c) 3*(-3)-4*(-3)*(-1)+(-3){2}-(-1){2}= -9 + 12 * (-1) + 9 - 1 = -9 - 12 + 9 - 1 = -13