B 4 1 3b 2 )( 12b 8 July 8, 2019 16 32 64 128 (3b)/(b - 2) (4b)/(b + 2) (12b ^ 2)/(b ^ 2 - 4) 3 ba 4 12 1) (3b)/(b - 2) и 4/(b ^ 2 - 4) 2. 1) (3b)/(b - 2) и 4/(b ^ 2 - 4)