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

$x^2+3x-10-x^2+4x+21+x^2-2x-15-x^2-3x-2-7+32$

$\int2xa^xdx$

$\int\frac{18x}{\left(x-8\right)\left(x+11\right)}dx$

$\lim_{x\to\infty}\left(\frac{\left(2^x+3^x\right)}{3^x+4^x}\right)$

$\int\left(180x^3\left(5x^4-7\right)^5\right)dx$

$z\left(x\right)=\left(x^2-3\right)^3$