$\lim_{x\to1}\left(\frac{x^9-1}{x^5-1}\right)$
$\lim_{x\to2}\left(\frac{x^2-4x+4}{x^3-12x+16}\right)$
$\lim_{x\to1}\left(\frac{x^5-1}{x^3-1}\right)$
$\lim_{x\to1}\left(\frac{2x^3-3x^2+1}{x^3-3x+2}\right)$
$\lim_{x\to-3}\left(\frac{x^4-81}{x+3}\right)$
$\lim_{x\to-1}\left(\frac{12x^3+12x^2}{x^4-x^2}\right)$
$\frac{m^2-n^2}{m+n}$
Find limits of functions at a specific point by directly plugging the value into the function.
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