$-85\:-\:4x\:<\:10x\:+\:167$

$-3x+2\ge17$

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

$\:\frac{2sin^2\left(w\right)+3cos\left(t\right)-3}{sin^2\left(w\right)}=\frac{2cos\left(w\right)-1}{1+cos\left(w\right)}$

$( m + 3 ) ^ { 3 }$

$12^4-9a^3b^2+3a$

$\frac{\frac{2}{x+1}-\frac{1}{x+3}}{4+\frac{3}{x+1}}$