$\frac{1}{1-n}+\frac{1}{1+n}=\sec\left(x\right)^2$
$3x^2-34x+70>0$
$\left(6\right)\left(-2\right)\left(-1\right)$
$\frac{dy}{dx}+y\cot\left(x\right)=5e^{\cos\left(x\right)}$
$\int\frac{y^3}{2y-1}dy$
$y^2+36y+324$
$\left(2xy+z\right)^2$
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