$i^2+4i+4$

$x^2-4x-320$

$\int\left(\frac{\left(2x+3\right)}{\left(x^2-3x+6\right)^2}\right)dx$

$\frac{\csc\:^4\left(x\right)\sec\:^4\left(x\right)}{\tan\:^2\left(x\right)\cot\:^2\left(x\right)}$

$y^3-y^2-y+1$

$\frac{dy}{dx}=17x^2y^{-\frac{1}{2}}$

$x\left(x+\frac{2}{x}\right)^7$