$\cos\:\left(\sec\:-cos\right)=\sin\left(2\right)$
$m\left(x^2+4\right)+27\left(x^2+4\right)$
$\frac{\left(3x+x^2\right)}{1}^2$
$cx-y=c\sin\left(x\right)$
$\sin^2x-\cos^2x=3$
$\left(e+2a+q\right)^2$
$8x^2-y^3=2x^3+4x^2$
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