$\left(10ab+5\right)\:\left(10ab-3x\right)$

$\lim_{x\to\infty}\left(x^{\log\left(x\right)}-\log\left(x\right)^x\right)$

$y=\left(x^4+x^3\right)^{tanx}$

$x^2+3x+36$

$\int\left(3x^5-2\right)^{-5}\left(15x^4\right)dx$

$\int10\left(5x+3\right)^2dx$

$\frac{x^{15}+y^{15}}{x^{3}+y^{3}}$