$x^2y^3+xy+x^4y^5$

$\int_0^{\pi}\left(cos\left(xt\right)sin\left(xt\right)\right)dx$

$\lim_{x\to\infty}\left(1+\frac{1}{n}\right)^{kn+a}$

$2b^3\sqrt[4]{b}$

$\frac{\left(1+cos\left(x\right)-sin\left(x\right)\right)}{\left(1+cos\left(x\right)+sin\left(x\right)\right)}$

$9y^2+72y$

$\left(3x^2y^2\right)\:\left(-7x^4y^4z\right)\:\left(-10x^3y^5z^3\right)\:$