$27x^2-75$
$-24.6+\left(14.8\right)$
$x^4+1=0$
$6a+6+4a-4$
$\int cosh\left(4x\right)cosh\left(3x\right)dx$
$\left(x-2y\right)^5$
$\lim\:_{x\to\:0}\frac{e^{x^2\left(x^2-2x+1\right)-1}}{arctan\left(x^2\left(4x^2+3x+1\right)\right)}$
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