$6\left(x\:-\:4\right)\:=\:2\left(x\:-\:8\right)\:+\:3r$

$11.313^5$

$20+90+51\infty$

$-\left(-5\:\right)\:+\:8\:+\:\left(-8\right)\:+\:\left(-4\right)\:+\:\left(-7\right)\:+\:\left(-6\right)\:+\:\left(-200\right)$

$2344\cdot35$

$\lim_{x\to\infty}\left(\frac{\sqrt{10x^4+x^2+20}}{15x^2+33}\right)$

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