$\frac{\left(sin\left(2x\right)+sin\left(4x\right)\right)}{sin\left(2x\right)-sin\left(4x\right)}$

$m^4\left(3x-8y+z\right)+3n^2\left(3x-8y+z\right)$

$\frac{\sec\left(a\right)}{\tan\left(a\right)}=\csc\left(a\right)$

$\int\left(3.4x\cdot e^{\left(x^2\right)}\right)dx$

$\left(3n-5y\right)^4$

$\left(-3^2\right)^8$

$\left(\frac{1}{7}wz+\frac{1}{6}y^3\right)^2$