$-2x^2+2x+3$
$-\frac{1}{3}x-\frac{1}{5}x$
$sen^4a-cos^4a-1=-2\left(1+sen^2a\right)$
$6a^2\:-\:2b^4\:+\:4b^4c^2\:-\:12a^2c^2$
$-1p-4p>-10$
$\left(2x^3+5z^2\right)^2$
$\log_x\left(2015\right)=y$
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