$\frac{cos^3\left(x\right)+sin^3\left(x\right)}{cos\left(x\right)+sin\left(x\right)}=\frac{2-sin2\left(x\right)}{2}$

$67.5+78.9+.83+567.9$

$\left(2a^2-4b^3\right)^2$

$2\left(a\:-\:4b\right)^2\:-\:4\left(a\:-\:2b\right)^2\:+\:2\left(a\:+\:b\right)^2\:-\:4b\left(a\:+\:5b\right)$

$t^2+29-120$

$\int te^{-4t}\cdot dt$

$y=\:in\left(\frac{1+\sin\left(x\right)}{1-\sin\left(x\right)}\right)$