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

$\int\:\frac{1}{3+cos\left(g\right)}dg$

$secxdy=xcotydx$

$\frac{d}{dx}\left(\frac{\left(\left(7x-4\right)\left(3x+5\right)^{\frac{1}{2}}\right)}{8x-6}\right)$

$\lim_{x\to0}\left(\frac{e^x-1}{x-\sin\left(x\right)}\right)$

$\left(a+3\right)\left(a-1\right)\left(a+6\right)$

$-a^4\:b^2\:c+5a^3\:bc^2+a^2\:b$