$x^2-11x-121$
$\left(\tan\left(x\right)+\cot\left(x\right)\right)\cdot\frac{1}{2}\cdot\sin\left(2x\right)=1$
$\log\left(7\right)-\log\left(x-1\right)$
$\frac{3x^5+x^4+4x^3-x+5}{x^2+2x-3}$
$\:-4\left(-3z+9\right)-8z$
$\int_0^{sinx}\left(4\sqrt{x}\right)dx$
$\frac{x^3-2^2-3+2}{x^2-5x+6\:}$
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