$30x^2+68x+34$

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

$\left(6x^6+x^8-4x^7-4x\right)^2$

$g\left(x\right)=\left(x-y\right)\left(x^2+y^2\right)$

$\int\:\frac{-5}{\sec\left(x\right)-\cos\left(x\right)}dx$

$\lim_{x\to\infty}\left(ln\left(x^5+7x^4+2\right)\right)$

$\left(-7\right)\cdot\left(-4\right):\left(+2\right)$