$6\left(\frac{a^8+b^8}{\left(ab\right)^4}\right)-4$

$17-\left[\frac{\left(4-\left(-12\right)\right)}{\left(15+\left(-7\right)\right)}\right]\cdot\left(-11\right)$

$12.59+1.98+350.9$

$5\cos^2\left(x\right)-24\sin\left(x\right)\cos\left(x\right)-5\sin^2\left(x\right)$

$\left(t\right)\left(t+3\right)\left(t+2\right)$

$\int12\:x^2\sqrt{4x^3+2}dx$

$\lim_{x\to\infty}\left(\frac{ln\left(3x^2-1\right)}{x^2}\right)$