$x+4x-4$
$\int_x^{x^2-2}\left(\frac{t^2-2}{t^2-1}\right)dt$
$8k^2\:-\:24k\:-\:32$
$x^4-2x^3+x^3$
$2x^3-2x^2-4x+46$
$\lim_{x\to0}\left(\frac{cos5x-cos3x}{x.sin2x}\right)$
$2\sin\left(3x\right)\cdot\cos\left(x\right)-\sin\left(2x\right)$
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