$\left(6cos\:x\:-\:8sin\:x\right)^2+\left(8\:cos\:x\:+\:6\:sin\:x\right)^2=100$

$x^3\cdot6^-x$

$\left(5c^2s\right)^2$

$ln\:\left(\frac{\left(3-x\right)}{\left(3+x\right)}\right)$

$2\left(y+2\right)\cdot x$

$\left[\left(2^3+2^5\right)-\left(-3\right)^5\right]\cdot\left(-8\right)^2+5^2$

$\left(a+1\right)\left(2a^2-2a-a^3\right)$