$9\left(2-\left|6+\left(4\right)^2+8\right|\right)$

$0.2\left(-3\right)^2-3.5\left(-2\right)$

$\int\frac{\cos^3\left(x\right)}{\sin^4\left(x\right)}dx$

$\int\frac{x^4+2x+1}{x^3-x^2-2x}dx$

$x2-\frac{1}{x+1}$

$\frac{dy}{dx}\left(x^2y^2-cosy\right)$

$\int\left(5x^3-4x^2+8x-7x\right)dx$