0 2 (- 4t 7 ) 2 t 8 July 8, 2019 16 32 64 128 0 2 (- 4t 7 )+ 2 t 8 4t − 7t 2 = 0 2) 0 4(6 - 4t) = 0 5(7 - 3t) - 1 9