$\int_0^1\left(x^5e^x\right)dx$

$\frac { i } { i }$

$5c^2df\left(9cd^2-7cd+4f\right)$

$\frac{d^2}{dx^2}sen\left(5x-2y\right)+e^{3^{x^2y}}$

$\left(4x+6\right)\left(x+3\right)$

$\frac{1-cos\left(2x\right)}{2}=sin^2x$

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