să se rezolve inecuatiile
[tex] a) \: ({x}^{2} - 4)( {x}^{2} -4 \sqrt{2} x + 7) < 0[/tex]
[tex]b) \: ( {5x}^{2} - 4 \sqrt{5x} + 6)(9 - {x}^{2} ) \geqslant 0[/tex]
[tex]c) \: (x - 1) {}^{2} - (x \sqrt{2} + 1) {}^{2} > 4 \sqrt{2} [/tex]
[tex]d) \: ( \frac{3x - 10}{x - 6} ) {}^{2} + 20 \geqslant \frac{9(10 - 3x)}{6 - x} [/tex]

urgent!! multumesc