$\int_{-2}^23x\left(x-4\right)dx$
$3\cos^2\left(x\right)=\cos\left(\:x\right)$
$\frac{1}{\left(x+5\right)^2}$
$\left(-\left(2x+1\right)sin\left(3x^2+2x\right)\right)$
$x-5>-7$
$81z^2-180z+100$
$6\:\left(\:4a\:\:+\:\:3\:\right)\:\:-\:\:2\:\left(\:6\:\:+\:\:a\:\:\right)\:\:\ge\:\:\:50$
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