Evaluate the limits$.$

$2.\underset{x2}{lim}\frac{x^2+3x}{x-2}=10$

$26.\underset{x3}{lim}\frac{x^2-8x+15}{x-3}$

$22.\underset{x3}{lim}\frac{x^2+4x-21}{x-3}$

$27$: $\underset{x-1}{lim}\frac{3x^2+2x-1}{x+1}$

$23.\underset{x-2}{lim}\frac{x^2-6x-16}{x+2}$

$2.\underset{x2}{lim}\frac{5x^2-12x-4}{x-2}$

$2\underset{x1}{lim}\frac{x^2+x-2}{x-1}$

$29.\underset{x2}{lim}\frac{2x^3-5x^2-5x-6}{x-2}$

$2.\underset{x-4}{lim}\frac{x^2+6x+8}{x+4}$

$30\underset{x3}{lim}\frac{3^3-10x^2+7x-12}{-3}$