$16a^4+48a^2+36$

$\left(5a^3b+3c^3\right)^3$

$\frac{dy}{dx}-xy^2=2xy$

$\int\left(p\left(p+3\right)^5\right)dp$

$\sec\left(x\right)^4+\cos\left(x\right)^4+2\sin\left(x\right)\cos\left(x\right)$

$a.a.a$

$\lim_{x\to\frac{\pi}{4}}\left(\frac{7tan\left(x\right)-7cot\left(x\right)}{x-\frac{\pi}{4}}\right)$