$4x^2-2y=6$

$-2\left(x+3\right)+5$

$\frac{cos\left(x\right)^2}{sin\left(x\right)}=\frac{cos\left(x\right)cos\left(x\right)}{sin\left(x\right)}$

$\lim_{x\to-\infty}\left(\frac{cos\left(3x\right)}{x}\right)$

$\frac{csc^2x}{cot\:x\:+\:tan\:x}=\frac{cos\:x}{sin\:x}$

$\int_2^3\left(\frac{k+3}{\left(x-2\right)^{\frac{2}{3}}}\right)dx$

$\left(6a-3c\right)^3$