$\left(3^7\cdot4^7\right)\left(2\cdot5\right)^{-3}\left(5^2\right)$

$3x^2+4x+1=0$

$-x^2+48x-12=0$

$\lim_{x\to\infty\:}\left(\frac{10-81^{\frac{489}{x}}}{4}\right)^x$

$\frac{2x^3+4x^2-x+2}{x^2+2x-1}$

$\left(3x^2+5y^3\right)\left(3x^3-5y^3\right)$

$\int\frac{x^2+5x+2}{x\left(x+1\right)\left(x+2\right)}dx$