$\frac{x^2+2x}{-x^2+3x-2}$
$\lim_{x\to\infty}\left(3x+\cos\left(x\right)\right)\cdot\left(\sqrt{x^2+2}-x\right)$
$2\left(3\right)\left(2\right)-5\left(3\right)^2\left(2\right)$
$f\left(x\right)=\left(5x^3-x\right)\left(4x^2\right)$
$5\:+\:\left[\:\left(3\:-5\right)\:.\:\left(4\:.\:2\right)\:+\:3\:\right]\:-2\:+\:4\::\:\left[\:6\:+\:\left(-4\right)\:\right]\:$
$-3x^3+4x^2-7x;\:x=-2$
$\frac{9x^3}{24x^6}$
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