$x^2=\left(-x^2\right)$
$-5x+9<-6$
$y^2+16y=17$
$dy=\frac{y+9}{x+4}dx$
$\lim_{x\to0}\frac{x-\cos\left(x\right)}{x-\sin\left(x\right)}$
$67^3$
$12x=480$
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