$\left(x^2+x+1\right)^2\left(3x-1\right)+2x+1$
$f\left(x\right)=\frac{2}{1+x^3}$
$\int\sin\left(2x\right)\cos^2\left(3x\right)dx$
$\frac{\cos\left(x\right)-1}{\sin\left(x\right)}-\frac{\sin\left(x\right)}{\cos\left(x\right)-1}=-2\csc\left(x\right)$
$x^2+6x-91=0$
$\left(k+3\right)\left(-4k-7\right)$
$m^2n^{-3}$
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