$4x+11<-21$

$\frac{\left(\sin\:\left(x\right)+\tan\:\left(x\right)\right)^2+\cos\:^2x-\sec\:^2\left(x\right)}{\tan\left(x\right)}$

$\lim_{x\to0}\left(\frac{x}{x^2-7x+1}\:\right)$

$x^2-35x+35$

$\left(3x^3-x+12\:\right)\left(x^2-5x+8\right)$

$0.6-0.2$

$-\frac{3x}{50}\cdot x$