$$\left. \begin{array} { l } { E = ( 3 x - 4 ) ^ { 2 } - 9 x + 12 : 6 x } \\ { \quad . ( 4 ) ^ { 3 } + 4 x + 2 ^ { 2 } + 64 x + 4 } \\ { 8 x ^ { 2 } - 28 x + 12 \leq 2 \times ( 4 x - 2 ) ^ { 2 } - 4 } \\ { 8 x ^ \right.$$
$x=\frac{y-72}{68}$
$E=\frac{9y^{2}}{4624}-\frac{851y}{1156}+\frac{17026}{289}\text{ and }\left(y\geq \frac{352}{3}\text{ or }y\leq 38\right)$
$y=68x+72$
