$3\sin^2x\:=\:-\sin\left(x\right)$
$\lim_{x\to\infty}\left(x^2-5x+7\right)$
$\frac{4a^2b^2c^2}{-2bc}$
$80\cdot36.74\cdot0.125$
$5\left(x\right)^{2n+2}$
$\int\left(2x\sqrt{x^2-4}\right)dx$
$25x^2-15x+36$
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