$\csc\left(x\right)\tan\left(x\right)-\sin\left(x\right)\tan\left(x\right)=\cos\left(x\right)$

$\left(a^5+1\right)^2$

$-4x^2x\:25\:x\:y^3$

$\sin\:\left(4x\right)+\sin\:\left(2x\right)=2\sin\:\left(x\right)\cos\:\left(x\right)\left(2\cos\:\left(2x\right)+1\right)$

$\log\left(x+1\right)+\log\left(x+6\right)=\log\left(6\right)$

$\int\frac{x}{\sqrt{-105-7x^2-56x}}dx$

$2.5\left(3.25\right)^4$