Oblicz granice a)[latex] lim_{x o 2} frac{ x^{2} -4}{x+1} [/latex] b)[latex] lim_{x o 4} frac{-4x+16}{-3x+12} [/latex] c)[latex] lim_{x o -2} frac{ sqrt{x+3}-1 }{x+2} [/latex]

Oblicz granice a)[latex] lim_{x o 2} frac{ x^{2} -4}{x+1} [/latex] b)[latex] lim_{x o 4} frac{-4x+16}{-3x+12} [/latex] c)[latex] lim_{x o -2} frac{ sqrt{x+3}-1 }{x+2} [/latex]