$\left(\frac{\left(2x^2+1\right)^3}{\left(\sqrt{x}^2-1\right)}\right)$

$\int\left(\frac{2x^3-x^2-7x}{x}\right)dx$

$\left(-4\right)-\:\left(-24\right)$

$7t\frac{dy}{dt}+y=0$

$\sin\left(2x\right)\left(\left(\tan\left(x\right)-\cot\left(x\right)\right)\right)$

$-\left(-10+4a\right)$

$\left(-348\right)-\left(-725\right)$