$\int46xdx$

$\left|1\right|\left|2\right|\left(a+b\right)^2-\left(a^2+b^2\right)$

$9x^2y^2-36z^6$

$\left(3yx^2+2z^2\right)\left(4y^2z^3+2z^2\right)$

$\cos\left(y\right)\left(1+\tan^2\left(y\right)\right)$

$\int\left(\frac{5}{\sqrt{9-36y^2}}\right)dy$

$\lim_{t\to9}\left(\frac{9+t}{3-\sqrt{t}}\right)$