$149\le26s+45$

$9x^2-8x^3-12x^4+7x-13+8-7x$

$\lim_{x\to-3}\left(\frac{-2x^3+12x^2\:-54}{x^3+27}\right)$

$\int\frac{\left(6x^2-13x+6\right)}{x^3-3x^2+2x}dx$

$2y'+2y=0$

$\left(\frac{\cos\left(x\right)}{\sin\left(x\right)\cos\left(x\right)}\right)^2=\csc\left(x\right)^2$

$f\left(x\right)=\frac{\left(x+1\right)^2}{\left(2x-4\right)^{10}}$