$\int\frac{1}{1+sin\left(2x\right)}dx$
$x+3=11$
$8+15-3+7$
$\frac{1}{16}\left(x-14\right)+1+x\:$
$2x^2-42x+180$
$\frac{n}{2}=4$
$4xy-2x-x^2y-4+6+x^2y^2$
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