Question

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

urgent!! multumesc

Answer 1

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