Ayuda pr favor es para mañana?

Respuesta : A)Explicación paso a paso : <img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B6%7D%20%2F%20%5Cfrac%7B1%7D%7B3%7D%20%3D%20%5Cfrac%7B1x3%7D%7B6x1%7D%20%3D%5Cfrac%7B1%7D%7B2%7D%20---%3E%20Primer%20termino%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20k%5E%7B2%7D%5C%5C%5C%5C%20%5Cfrac%7B5%7D%7B36%7D%20%2F%20%5Cfrac%7B1%7D%7B3%7D%20%3D%20%5Cfrac%7B5x3%7D%7B36x1%7D%20%3D%5Cfrac%7B5%7D%7B12%7D%20---%3E%20Segundo%20termino%20%3D%20%5Cfrac%7B5%7D%7B6%7D%20k%20%5C%5C%5C%5C%5Cfrac%7B11%7D%7B36%7D%20%2F%20%5Cfrac%7B1%7D%7B3%7D%20%3D%20%5Cfrac%7B11x3%7D%7B36x1%7D%20%3D%5Cfrac%7B33%7D%7B36%7D%20---%3E%20Tercer%20termino%20%3D%20%5Cfrac%7B11%7D%7B12%7D" /> Primer termino = \ frac{1}{2} k ^ {2} \ \ \ \ \ frac{5}{36} / \ frac{1}{3} = \ frac{5x3}{36x1} = \ frac{5}{12} - - - > Segundo termino = \ frac{5}{6} k \ \ \ \ \ frac{11}{36} / \ frac{1}{3} = \ frac{11x3}{36x1} = \ frac{33}{36} - - - > Tercer termino = \ frac{11}{12}" alt = " \ frac{1}{6} / \ frac{1}{3} = \ frac{1x3}{6x1} = \ frac{1}{2} - - - > Primer termino = \ frac{1}{2} k ^ {2} \ \ \ \ \ frac{5}{36} / \ frac{1}{3} = \ frac{5x3}{36x1} = \ frac{5}{12} - - - > Segundo termino = \ frac{5}{6} k \ \ \ \ \ frac{11}{36} / \ frac{1}{3} = \ frac{11x3}{36x1} = \ frac{33}{36} - - - > Tercer termino = \ frac{11}{12}" align = "absmiddle" class = "latex - formula">.