$x^4-6x^3+7x^2+6x-8$
$\left(-32x^4+3-33x^2+10x^3+40x^5\right)\left(5x-3\right)$
$x^2+26x+6^2$
$\frac{1}{\cos\left(x\right)}-\frac{\cos\left(x\right)}{1+\sin\left(x\right)}w$
$-7-0.5-4$
$\left(x^2+2y\right)^4$
$\lim_{x\to2}\left(\frac{3-\sqrt{4x-1}}{x^2-2x}\right)$
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