chrisisgone16 chrisisgone16 02-06-2022 Mathematics contestada Which of the following algebraic expressions is not simplified? A. 9x³y² +5x²y³ - 2x²y² + xy 3 2 2 B. -3a²b² +4ab² +6a²b-3ab 2.3 C. 2p²q² +2p²q²³ - 2p²q² + xy D. 8m²n² +3m³n - 3n³m +9mn