$4.26\cdot10^3$
$\cos\left(3x-4\right)$
$\frac{x^4+2x^3-10}{x-2}$
$\left(-4x-1\right)+\left(5x-3\right)$
$\frac{2}{\cot\left(z\right)-\tan\left(z\right)}=\tan\left(2z\right)$
$4^{2x+4}=8^{x+2}$
$\left(8-y\right)^2$
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