$\left(a+b+3c\right)^2$

$\left(w^{14}\right)^{\frac{1}{4}}$

$\lim_{x\to0}\left(\frac{tan\left(x-1\right)}{x-1}\right)$

$cos^2\left(o\right)=\frac{1}{2}cos\left(o\right)$

$\int\frac{x+43}{x^2-4x-21}dx$

$\lim_{x\to infinity}\left(1+\frac{5}{x}\right)^{6x}$

$\frac{d}{dx}x^4=x^2y-y^3$