$\pi\cdot\pi^{-1}$
$6x^2-4x+3$
$\left(m^2+7n-8c+d\right)-\left(m^2-9n+11c+14\right)$
$6+\left|5+\left(7+12\right)\right|$
$\frac{1-z^3}{1-z}$
$3x^3y^4\left(-14x^2y^5\right)$
$\int\left(x\cdot\left(3x^2+1\right)^6\right)dx$
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