$\lim_{x\to\infty}\left(n^22^{-n}\right)$
$\int\frac{7}{cos^2w}dw$
$\lim_{x\to5}\left(\frac{12x-16}{x^2-6x+5}\right)$
$x^4+x^3-6x^2-4x+8$
$e^{x^2}y\:dy+\:x\left(1+y^2\right)dx\:=\:0$
$2\left(sinx-1\right)=3sinx-1.732$
$4x^2+4x+4$
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