$4x^2\cdot4x+4$
$2x-3x$
$113+114+115+116$
$-a+4a$
$\int_e^{3x}dx$
$\left(c^4+c^2-4\right)\left(c^4-c^{2\:}-4\right)$
$3x^2-5x+1.x=5$
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