$\int\left(1-\cos\left(\frac{t}{2}\right)\right)^2\sin\frac{t}{2}dt$

$\lim_{x\to2}\left(\frac{9x^2-4}{x}\right)$

$29:0$

$\left(4y^3-z^2\right)\left(4z^3+z^2\right)$

$\frac{d^2}{dx^2}\left(4x\sin\left(x\right)\right)$

$\tan\left(42\right)\cdot\sec\left(48\right)\cdot\cos\left(42\right)$

$\frac{a}{4}+\frac{b}{3}+c;\:a=8;\:b=6$