simplify printing logic

cmd/gcd.go

@@ -52,15 +52,13 @@ func gcd(cmd *cobra.Command, args []string) {
 		}
 	}
 
+	fmt.Print(&z)
 	if extended {
-		fmt.Print(&z)
 		for _, c := range coeffs {
 			fmt.Printf(" %s", &c)
 		}
-		fmt.Println()
-	} else {
-		fmt.Println(&z)
 	}
+	fmt.Println()
 }
 
 // gcdCmd represents the gcd command