$\frac{dy}{dx}=\frac{x}{\sqrt{x+1}}$
$c^3+d^3$
$\left(\frac{1}{3}a-26\right)^3$
$5\left(3x-2\right)+2\left(6x-1\right)$
$20\cdot5$
$\cos\left(180^{\circ\:\:}-x\right)=-\cos\left(x\right)$
$\frac{\cos^2\left(x\right)+\cos\left(x\right)}{\sin\left(x\right)+\sin\left(x\right)\cos\left(x\right)}\:=cot\left(x\right)$
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