$x+0.8\left(x+0.2\right)$

$\frac{4x^2+4x-3}{3x-2}$

$-2\left(7g\:+\:6\right)\:$

$\frac{dy}{dx}=\frac{\left(x\left(1-t^2\right)+t^3\cdot ln\left(t\right)\right)}{t\left(t^2+1\right)}$

$\cos\left(x\right)^3+cos\left(x\right)\sin^2\left(x\right)=1$

$-2x^3\:+\:4x^2\:+\:-2\:-\:1$

$\int xsen\left(\frac{x}{5}\right)dx$