diff --git a/TODO b/TODO
index 1925e20..9fea3f7 100644
--- a/TODO
+++ b/TODO
@@ -2,11 +2,10 @@
 
 * Improve fix recognition (DONE)
 * More flexible expression parsing (DONE)
-* bug: expression can't handle -(-2)
+* bug: expression can't handle -(-2) (DONE)
 * Overload + - * for expression (DONE ~ no steps yet)
-* Expression should be able to simplify expression with ":"
 * Add name to polynom (DONE)
 
 * Expression parents class and his children: Numerical_exp, toGenerate_exp and formal expression
 * Create tbl sgn and variation render
-* Make less verbose fractions operations
+* Make less verbose fractions operations(DONE)
diff --git a/bugs b/bugs
index f302e91..39b713e 100644
--- a/bugs
+++ b/bugs
@@ -1,6 +1,6 @@
 * Soustraction de Polynômes!!!!
 
-* Expression importe mal 4x^2
+* (solved) Expression importe mal 4x^2
     In [9]: e = Expression("3x + 4x^2 - 1")
 
     In [10]: print(e)