$4\sin\left(\frac{\pi}{5}x\right)=3$
$3x+y=5$
$\frac{\left(\frac{1}{cos\left(x\right)}\right)^2+cot^2\left(x\right)+3}{-2}$
$4+8+7\left(9\right)$
$arctan\left(tan\left(\frac{56}{45}\pi\right)\right)$
$x^{2}-2xy+y^{2}=6$
$\sqrt{x^2-25}+\frac{x^2}{x^2+1}$
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