$\frac{x^2+5+2x}{x-4}$
$\left(\frac{1}{2}-4z\right)^3$
$a^{\:5}.a^2.b^3$
$\sqrt{9x^{2-4}}$
$6\left(2\right)^30$
$\int-2\cos^2\left(3x\right)dx$
$x+3\left(x-7\right)-2\left(x+8\right)<41$
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