$\frac{12x^4+7x^2-15}{x^2-2}$
$-120+78+33-10$
$\int\left(\left(\frac{-1}{3}\right)\left(2000+x\right)^{-3}\right)dx$
$12\left(y^2-y^3\right)$
$\sqrt{3}cot\:\frac{3\pi}{7}x+3=0$
$3n\cdot3n^3$
$\int\left(x\sin\left(1+x\right)\right)dx$
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