$7+12\left(11\right)$

$\left[\left(3x^2y^3\right)^2\right]^2\left(x^3yz^5\right)^3$

$\lim_{x\to\infty}x\left(\arctanh\left(\frac{x+1}{x+2}\right)\left(\frac{\pi}{4}\right)\right)$

$\int\frac{\cos\left(c\right)}{1+\sin\left(c\right)}dc$

$-2\left(6-\left(-3\right)+2^3\right)$

$3-11a+10a^2$

$\int_0^{\pi\:}\sin\:^2xdx$