$\frac{\left(3\cos\left(x\right)\cdot\sin\left(x\right)\right)+\cos^3\left(x\right)+\left(\cos\left(x\right)\cdot\sin^2\left(x\right)\right)}{\cos\left(x\right)}$

$( \frac { 0 + 4 } { 2 } ) ^ { 2 }$

$-6x^2-3x+8$

$\int_{0}^{\infty}d^{0}$

$e=\:\sqrt{\left(3.02\right)^2+\left(1.99\right)^2+\left(5.97\right)^2}$

$8z-9-4z^3+2z^2+6$

$\frac{d}{dx}-2x^2+8$