X 4x 1 7 x 2 2x 3x 8 x 6 July 8, 2019 16 32 64 128 X(4x + 1) - 7(x ^ 2 - 2x) 3x(8 - x) + 6 7 x − 4 ( 2 x − 1 ) ≤ − 7
