I will give you BRAINLIEST AND 1 MILLION DOLLARS IS YOU ANSWER THIS

Part A: Factor 3x2a2 βˆ’ 5xa2 βˆ’ 2a2. Show your work. (4 points)

Part B: Factor x2 βˆ’ 10x + 25. Show your work. (3 points)

Part C: Factor x2 βˆ’ 81. Show your work. (3 points)