$\frac{x^2-9x+20}{x^2+x-20}$

$\sqrt[2]{7.0583}$

$\int\frac{20x^3}{\left(5x^4-2\right)^4}dx$

$4x^2y+52xy-68y$

$\frac{\sin\left(x\right)}{1+\:\cos\left(x\right)}+1+\frac{\cos\left(x\right)}{\sin\left(x\right)}=2\csc\left(x\right)$

$23.345+2.56-22.905$

$y\left(x\right)+\left(\sec\left(x\right)\cdoty\left(x\right)\right)=\cos x$