$\left(1+\sec\left(x\right)\right)\sin\left(x\right)$

$\lim_{x\to1}\left(\frac{4x-4}{lnx^8}\right)$

$5<9-15<27$

$\frac{a^4y^0}{x^{-2}}$

$11\cdot6$

$\left(\frac{-48ab^{-2}}{-6a^3b^5}\right)^{-1}$

$\tan\left(x\right)^2-\cot\left(x\right)^2=\sec\left(x\right)^2\left(1-\cot\left(x\right)^2\right)$