Let $f(x)=\frac{(x2{)}^2}{x^2-4}.$ Find

$($a$)\underset{x-2}{lim}f(x)=$

$($b$)\underset{x0}{lim}f(x)=$

$($c$)\underset{x2}{lim}f(x)=$

Let $g(x)=\frac{3x^{2}2x-1}{x^{2}3x2}.$ Find

$($a$)\underset{x-3}{lim}g(x)=$

$($b$)\underset{x-1}{lim}g(x)=$

$($c$)\underset{x2}{lim}g(x)=$

$2$