$\lim_{x\to2}\frac{x^3-x^2-3x+2}{x^2-5x+6}$
$\int7^{4x-2}dx$
$\frac{x-9}{x^2+4x}$
$3x\:-2\left(x\:-\:2\right)\:\ge\:2x$
$\frac{2}{5}xy^2.\:\frac{7}{10}x^3y$
$\lim_{x\to\infty}\:e$
$-3.5\left(1.4+3.1\right)+6.9\left(-4.3\right)$
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