$\cos\left(z\right)+\tan\left(z\right)\sin\left(z\right)$
$3x+9=15$
$2x+6>4$
$\frac{\left(-12x^{\left(3\right)}+10x^{\left(2\right)}+20x^{\left(4\right)}-16+3x\right)}{-4x^2+2}$
$\int\left(v\cdot e^{-\frac{\left(mv^2\right)}{2kt}}\right)dv$
$1+7-12+6-13+4-11$
$12x^2-25x+12=0$
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