$\left(x^2-2x\right)\left(x^4+2x^3+4x^2\right)$

$\frac{\left(\left(-10n^{-2}\right)^3\left(4n^5\right)^2\right)}{\left(\left(2n^8\right)^2\right)}$

$6x^2+43x+40$

$\int\frac{8x^2-12}{x\left(x^2+2x-6\right)}dx$

$\frac{x^2+11x+24}{x^2-5x-24}$

$x^2\:14x+49$

$x^2=\left(4x^2y^3\:+1\right)^2$