$(a)\;\large\frac{63}{25}- \large\frac{16}{25}i\qquad(b)\;\large\frac{63}{25}- \large\frac{17}{25}i\qquad(c)\;\large\frac{16}{25}- \large\frac{63}{25}i\qquad(d)\;\large\frac{63}{25}+ \large\frac{16}{25}i$