\[\boxed{\mathbf{514\ (514).\ }Еуроки - \ ДЗ\ без\ мороки}\]
\[1)\ (3x - 2)^{2} -\]
\[- (3x - 1)(2x + 3) < 3x(x - 7)\]
\[9x^{2} - 12x + 4 - 6x^{2} -\]
\[- 9x + 2x + 3 < 3x^{2} - 21x\]
\[3x^{2} - 21x + 2x + 7 -\]
\[- 3x^{2} + 21x < 0\]
\[2x + 7 < 0\]
\[x < - 3,5\]
\[Ответ:( - \infty;\ - 3,5).\]
\[2) - 3x^{2} - 10x + 48 \leq 0\]
\[3x^{2} + 10x - 48 \geq 0\]
\[D = 100 + 576 = 676\]
\[x_{1} = \frac{- 10 - 26}{6} = - 6\]
\[x_{2} = \frac{- 10 + 26}{6} = \frac{8}{3} = 2\frac{2}{3}\]
\[Ответ:\]
\[x \in ( - \infty;\ - 6\rbrack \cup \left\lbrack 2\frac{2}{3};\ + \infty \right).\]