$x\cdot\tan\left(47\right)=\left(x+389\right)\tan\left(17\right)$
$\left[-7\right]-\left[-5\right]+\left[-4\right]-\left[-3\right]$
$\left(3x+4y\right)\left(6x-4y\right)$
$\frac{2x^4-x^3+x^2-10}{x-3}$
$\left(z^{k-1}+w^{3-k}\right)\left(z^{k-1}-w^{3-k}\right)$
$m=11.18,n=10.25,p=15.16u$
$\frac{x+6}{3}-\frac{x+8}{5}=0$
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