reecefields2740 reecefields2740 06-06-2023 Mathematics contestada Find all values of a, b, and c for which A is symmetric. -9 a 2b + 2c 2a+b+c] A = 3 2 a+c -6 3 a= i b= i C= Use the symbol t as a parameter if needed. eTextbook and Media Mi -2