$\left(2x+1\right)\left(4y-3\right)$
$3w^2-5w+3$
$\frac{cotx}{sin^2x}=\frac{csc^2x}{tanx}$
$log\left(2x-1\right)=log\left(x^2\right)$
$528^2-527^2$
$z+6\ge-4$
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