Let $\;z_{1}=2-i\;,z_{2}=-2+i\;$. Find (i)$\;Re(\large\frac{z_{1}z_{2}}{\overline{z_{1}}})\;,$ (ii) $\;Im(\large\frac{1}{z_{1} \overline{z_{2}}})$

Question

$(a)\;-\large\frac{2}{5},0\qquad(b)\;-\large\frac{3}{5},0\qquad(c)\;-\large\frac{1}{5},0\qquad(d)\;-\large\frac{7}{5},0$