$f\left(x\right)=\left(x-7\right)^2\left(x^2+7\right)$

$\frac{-3x}{2-6x^2}$

$\lim_{x\to+\infty}\left(\left(\sin\left(x\right)+\ln\left(x\right)\right)\frac{1}{\sin\left(x\right)-\ln\left(x\right)}\right)$

$\left(\cos\left(x\right).\cot\left(x\right).\sin^2\left(x\right)+\sin^2\left(x\right)\right).\sin\left(x\right)+\cot^2\left(x\right).\sin^2\left(x\right)$

$\lim_{x\to-2}\left(\frac{c+2}{c^2-4}\right)$

$\int\theta\cos\text{\thetad}\theta$

$\left(16x^2-28x+1\right)^2$