$7+x=-4$
$\int\frac{x^2+4}{\left(x^2+1\right)}dx$
$\frac{0^4}{4}$
$\left(p+13\right)\left(p+9\right)$
$36\cdot18$
$\lim_{x\to-1}\left(\frac{4x^4+5x^3+7x+8}{x+1}\right)$
$\int lnx\:ln\left(x\right)dx$
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