$\frac{dy}{dx}=\frac{\left(lnx\right)^2}{xy^2}$

$\left(3x^m+4y^n\right)\cdot\left(3x^m-7y^n\right)$

$\lim_{x\to a}\left(a^2-x^2\right)\tan\left(\frac{\pi x}{2a}\right)$

$9x^2+4y^2-36x+24y+36=0$

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

$\int_1^2\left(3x^2+2x-5\right)dx$

$\int\frac{\left(4x^2\:+8x\right)}{\left(x-4\right)\left(x+2\right)^2}dx$