$\int\left(2t-\cos\left(6t\right)\right)dt$

$-18\left(12+23\right)$

$\lim_{x\to0}\left(x^2e^{\frac{1}{x^2}}\right)$

$\left(\frac{1}{10}f^4v^5w\right)^2\left(-\frac{5}{2}fv^7wf\right)$

$\left(2x^3-3x^2+10x-6\right)\left(x^2\right)$

$2b^3+b^2+b^2+b+b^3+b+b$

$\frac{1}{tanx-secx}+\frac{1}{tanx+secx}$