$x^2-5x-8>0$

$\left(8y-4\right)\left(7y+5\right)$

$\frac{2x^2y^4}{x^3y^4}$

$\frac{d^2}{dx^2}\left(x^2\cdot\cos\left(y\right)\right)$

$h\left(t\right)=\left(\frac{t^2}{t^3+t^2}\right)^2$

$3\sin^2\left(x\right)+\sin\left(x\right)-2=0$

$\csc\left(3x\right)=\frac{\cos\left(6x\right)}{\sin\left(3x\right)}-\frac{\sin\left(6x\right)}{\cos\left(3x\right)}$