$\int\left(5x+2\right)^{-5}\cdot3x$
$\lim_{x\to0}\left(\frac{\pi\cos\left(\pi x\right)}{x^2-2x+1}\right)$
$y+x^2=4y$
$4x^4-20x^2+25$
$110\cdot107$
$\left(\frac{1}{a}-y^2\right)^{15}=-\frac{455}{27}$
$x-\left(x-5\right)-3\left(x-6\right)$
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