Latest exam Aptitude Question SOLUTION: 4) Perform the operation: (5x2 - 3x - 9) + (2x2 - 7x + 4) 5) Multiply: [(1/4)z + (1/3)][(1/4)z - (1/5)] 6)Simplify and evaluate: (22x5y-3z4/40x-2y-8z5)3 thank you very much