$\int_0^{\frac{2\pi}{3}}\left(sin\left(\frac{x}{2}\right)\right)dx$
$\left(4x+4+7x+7+x^2\right)$
$4\sec\left(x\right)\cos\left(x\right)-1$
$-4x^2+10x+24$
$4w+\left(2x-\left(\left(y-2z\right)-3x+4z\right)-\frac{3}{8}w+2y+\frac{2}{11}z\right)$
$\frac{5x^5+25x^{10}}{5x^3}$
$4\cos^2-2\cos$
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