$2x^5-4x^3+x-1$

$\lim_{x\to\infty}\left(\frac{x-10}{x-3}\right)^{x-3}$

$7sin\left(8x\right)sin\left(15x\right)$

$x^3+3x^2+3x+1+x^3-3x^2+3x-1-2x^3-6x$

$x^2-11x+28=\left(x-4\right)\left(x-7\right)$

$\sqrt[4]{-9}\cdot\sqrt[4]{9}\cdot\sqrt[4]{-1}$

$\int2x^3\:\left(5x^4+7\right)^6\:dx$