$\frac{x-2}{4}=-3$
$-x^4+2x^2=x$
$\frac{\csc\left(x\right)-1}{\cot\left(x\right)}$
$x^2-11x+28=0$
$\int x^3\left(9+x^2\right)^{\frac{3}{2}}dx$
$\int x^2\left(3-e^3\right)dx$
$f\left(x\right)=\sqrt{x+1}-\frac{2}{x}$
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