$6a^2+8a+2$

$5 - \{ ( 8 - 6 : 3 ) + 4 ( 5 \cdot - 3 + 5 ) - 7 \}$

$\left(1+\frac{0.06}{4}\right)^{4\cdot x}-3$

$\int x\left(2x-3\right)^{\frac{1}{3}}dx$

$\left(6x^2-y^2z\right)\left(6x^2+y^2z\right)$

$\:\left(-\:2\right)^7+\:\left(-\:3\right)^4+\:\left(-\:4\right)^3\:+\:\left(-\:11\right)^2$

$y+\frac{dy}{dx}\left(x\right)=\frac{y-1}{y+1}$