7 9x 19 7 2 4x 6 5 July 8, 2019 16 32 64 128 9.15. 1) - 4x ^ 2 - 7x + 2 9 x 7 + 49 / 7 6) 2 9x + 7 4=x+1 7 9 - 2(- 4x + 7) = 7
