$n\left(2\left(n+1\right)^3+1\right)$
$\frac{1-cos^2\:x}{cos^2\:x}=\left(\frac{sin\:x}{cos\:x}\right)$
$\frac{4x^4-2x^8}{3x^{10}}$
$1+3d^2-3d-d^3$
$\int\frac{24x^5}{5+4x^6}dx$
$\left(x-10\right)\left(x-30\right)$
$8cos\left(3x\right)=6$
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