$16x^2-\:+4y^2\:+16xy$
$36+12c^2-132c$
$b+5<-13$
$3x^2+14x-5=0$
$\frac{\left(a^2-8a-26\right)}{a+2}$
$\int_0^{\infty}\left(\frac{x^3}{x^4+2}\right)dx$
$\frac{2x^3-\:5x\:\:+\:3}{x-1}$
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