$\int\frac{\cos\left(e\right)}{\left(1-\sin\:^2\left(e\right)\right)\left(\sin^2\left(e\right)+1\right)^2}dx$

$\int_0^{0.5}\left(x^2\cdot\ln\left(x^3\right)\right)dx$

$\log\:\left(x\right)=log\left(216\right)+log\left(\frac{1}{9}\right)$

$\left(64x^2-y^2\right)$

$\left(10mn+5f^2\right)^2$

$x^2-11x=1$

$\left(x^2+1\right)e^{4x}$