$\lim_{x\to0}\left(\frac{\sin^2\left(3h\right)}{h^2}\right)$
$14a^3-10a^2$
$\frac{d}{dx}e$
$2^2-3^3+11$
$\:\frac{1}{4}\left(12^3\right)+8.5\left(-5^2\right)\left(12\right)-1.25\left(-5\right)\left(12^2\right)$
$\left(8u^6-20u^5\right)\left(u-1\right)$
$\left(1-\cos\left(a\right)\right)\left(1-\cos\left(a\right)\right)$
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