$9x^2-16y^2-36x-32y=124$
$5x-2<6x-20$
$\lim_{x\to\frac{\pi}{2}}\left(\frac{\sqrt{1-\cos\left(x\right)}-\sqrt{1+\cos\left(x\right)}}{\sqrt{\cot\left(x\right)}}\right)$
$\left(y+\frac{41}{12}\right)^3$
$x-6\le3x+12$
$49a^2-28ab+42b^2$
$2x^2+7x+3=0$
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