$5\left(1+x\right)<23+7x$
$\left(7x^{55}+3\right)^2$
$\frac{\cot^{2}x}{\csc x+1}=\csc x-1$
$3 n + 2 ( - 2 n - 1 )$
$\frac{d}{dx}\:-\:\frac{6}{x^3}$
$\tan\left(30\right)\frac{\sin\left(30\right)}{\cos\left(30\right)}$
$\int\left(x^2-3x\right)e^xdx$
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