$\sin^2a-1=0$
$\left(5e^{\left(5x\right)}\right)\left(xe^{\left(5x\right)}\right)$
$x+y=-z$
$\lim_{x\to\infty}\left(\frac{4x^2}{x^2+4}\right)$
$9m^2+6g-9$
$\left(c^{-4}a^5\right)^3\left(c^6a^{-2}\right)^4$
$4-4\left(7-4\right)+8-7\left(5-5\right)$
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