$8tanx+3=2tanx+3$
$x^2-10x+211$
$\left(64\cdot x^2\right)-\left(25\cdot y^2\right)$
$\sec\left(x\right)=\:-\frac{2\sqrt{3}}{3}$
$\sqrt[3]{\frac{x^5-x^3+3}{x^2}}$
$k^2+18k+17$
$s^2+8s+16$
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