$\frac{\left(+30\right)}{\left(-5\right)}$

$\lim_{x\to\infty}\left(\frac{x^4}{e^{\frac{x}{3}}}\right)$

$5xy+\left[2xy-\left(4xy-8xy\right)+10xy\right]+3xy$

$\left(p-q+r-s\right)^2$

$\int\left(2x^2\left(4x^3+5\right)^4\right)dx$

$1+\frac{\frac{1}{x}}{1-\frac{1}{x}}$

$\frac{dy}{dx}=2\sin\left(3x\right)-4x$