$\tan\left(x\right).\cos\left(x\right)-\sec\left(x\right).\csc\left(x\right)$

$\frac{\left(2+2\sin\left(x\right)+2\cos\left(x\right)\right)^2}{\left(\sin\left(x\right)+1\right)\left(\cos\left(x\right)+1\right)}$

$-16x^2-64x\:+55<=0$

$-2x^2+8x-1$

$\frac{3x^2+x-7}{x}$

$x^2+59x+54+82x^2+60x$