$\sin\left(x\right)^2-\sin\left(x\right)+1$
$\log\left(x\right)+\log\left(x-2\right)=\log\left(5\right)$
$\sqrt{9a^2b^2c}$
$-10m+-5m-7m+-4m^2$
$\cos30=\tan30\cdot\sec30$
$\lim_{x\to-1}\left(2x-5\right)$
$x2\:+\:3x\:-\:1,\:para\:x=\:3$
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