add gcd if all int

Makefile

@@ -68,9 +68,6 @@ else
   RM_OBJS     = rm -rf $(D_OBJS)
 endif
 
-# EXECUTION FLAGS
-RUN_FLAGS     = -b
-
 
 # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #
 #             .   target: prerequisites   .   $@ : target             #
@@ -106,7 +103,7 @@ $(NAME): $(OBJS)
 
 run: $(NAME)
 	@echo $(B_PURPLE)"\n---------------------------------------------\n1. degree 2 \n"$(RESET)
-	-./$(NAME) $(RUN_FLAGS) "3 * x^2 + 5 * x^1 - 2 * x^0 = 5 * x^1"
+	-./$(NAME) -b -d "3x² + 5x - 2 = 5x"
 
 test: $(NAME)
 	bash tester.sh