tashannalashae24561 tashannalashae24561 11-04-2024 Mathematics contestada Perform the indicated operation and simplify if possible. (a) y²-9/y²+6y+9 (b) z²+2z-3/3z²-z-2:(z+3) (c) 3-4m/m²+3m-10-2/m+5