$\left(6x^3y^2\right)\left(4x^2y\right)$
$\lim_{x\to02}\left(\frac{\sin\left(\pi x\right)}{x^2-4}\right)$
$27x^3-512$
$4xy^2\cdot3x^{-4}y^5$
$-x^2+4x-1$
$\int-7e^{14k}dk$
$\sqrt{\left(9x^4+6x^2+1\right)}$
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