diff --git a/apps/calculation/additional_outputs/second_degree_list_controller.cpp b/apps/calculation/additional_outputs/second_degree_list_controller.cpp
index 13866e430..2533c12f9 100644
--- a/apps/calculation/additional_outputs/second_degree_list_controller.cpp
+++ b/apps/calculation/additional_outputs/second_degree_list_controller.cpp
@@ -113,7 +113,7 @@ void SecondDegreeListController::setExpression(Poincare::Expression e) {
       xMinusAlphaPowerTwoWithFactor = xMinusAlphaPowerTwo;
       break;
     case MultiplicationTypeForA::Minus:
-      xMinusAlphaPowerTwoWithFactor = Multiplication::Builder(a.clone(), xMinusAlphaPowerTwo);
+      xMinusAlphaPowerTwoWithFactor = Opposite::Builder(xMinusAlphaPowerTwo);
       break;
     case MultiplicationTypeForA::Parenthesis:
       xMinusAlphaPowerTwoWithFactor = Multiplication::Builder(Parenthesis::Builder(a.clone()), xMinusAlphaPowerTwo);
@@ -170,15 +170,14 @@ void SecondDegreeListController::setExpression(Poincare::Expression e) {
     if (x0Opposite.isUninitialized()) {
       PoincareHelpers::Simplify(&x0, context, ExpressionNode::ReductionTarget::User);
       if (x0.type() == ExpressionNode::Type::Addition || x0.type() == ExpressionNode::Type::Subtraction) {
-        x0 = Parenthesis::Builder(x0.clone());
+        firstFactor = Subtraction::Builder(Symbol::Builder("x", strlen("x")), Parenthesis::Builder(x0));
+      }
+      else {
+        firstFactor = Subtraction::Builder(Symbol::Builder("x", strlen("x")), x0);
       }
-      firstFactor = Subtraction::Builder(Symbol::Builder("x", strlen("x")), x0);
     }
     else {
       PoincareHelpers::Simplify(&x0Opposite, context, ExpressionNode::ReductionTarget::User);
-      if (x0Opposite.type() == ExpressionNode::Type::Addition || x0Opposite.type() == ExpressionNode::Type::Subtraction) {
-        x0Opposite = Parenthesis::Builder(x0Opposite.clone());
-      }
       firstFactor = Addition::Builder(Symbol::Builder("x", strlen("x")), x0Opposite);
     }
     if (x0.type() == ExpressionNode::Type::Opposite) {
@@ -188,10 +187,12 @@ void SecondDegreeListController::setExpression(Poincare::Expression e) {
     Expression x1Opposite = getOppositeIfExists(x1, &reductionContext);
     if (x1Opposite.isUninitialized()) {
       PoincareHelpers::Simplify(&x1, context, ExpressionNode::ReductionTarget::User);
-      if (x1.type() == ExpressionNode::Type::Addition || x1.type() == ExpressionNode::Type::Subtraction) {
-        x1 = Parenthesis::Builder(x1.clone());
+      if (x0.type() == ExpressionNode::Type::Addition || x1.type() == ExpressionNode::Type::Subtraction) {
+        secondFactor = Subtraction::Builder(Symbol::Builder("x", strlen("x")), Parenthesis::Builder(x1));
+      }
+      else {
+        secondFactor = Subtraction::Builder(Symbol::Builder("x", strlen("x")), x1);
       }
-      secondFactor = Subtraction::Builder(Symbol::Builder("x", strlen("x")), x1);
     }
     else {
       PoincareHelpers::Simplify(&x1Opposite, context, ExpressionNode::ReductionTarget::User);
@@ -208,7 +209,7 @@ void SecondDegreeListController::setExpression(Poincare::Expression e) {
         factorized = solutionProduct;
         break;
       case MultiplicationTypeForA::Minus:
-        factorized = Multiplication::Builder(a.clone(), solutionProduct);
+        factorized = Opposite::Builder(solutionProduct);
         break;
       case MultiplicationTypeForA::Parenthesis:
         factorized = Multiplication::Builder(Parenthesis::Builder(a.clone()), solutionProduct);
@@ -227,7 +228,12 @@ void SecondDegreeListController::setExpression(Poincare::Expression e) {
     
     if (x0Opposite.isUninitialized()) {
       PoincareHelpers::Simplify(&x0, context, ExpressionNode::ReductionTarget::User);
-      factor = Subtraction::Builder(Symbol::Builder("x", strlen("x")), x0);
+      if (x0.type() == ExpressionNode::Type::Addition || x1.type() == ExpressionNode::Type::Subtraction) {
+        factor = Subtraction::Builder(Symbol::Builder("x", strlen("x")), Parenthesis::Builder(x0));
+      }
+      else {
+        factor = Subtraction::Builder(Symbol::Builder("x", strlen("x")), x0);
+      }
     }
     else {
       PoincareHelpers::Simplify(&x0Opposite, context, ExpressionNode::ReductionTarget::User);
@@ -241,7 +247,7 @@ void SecondDegreeListController::setExpression(Poincare::Expression e) {
         factorized = solutionProduct;
         break;
       case MultiplicationTypeForA::Minus:
-        factorized = Multiplication::Builder(a.clone(), solutionProduct);
+        factorized = Opposite::Builder(solutionProduct);
         break;
       case MultiplicationTypeForA::Parenthesis:
         factorized = Multiplication::Builder(Parenthesis::Builder(a.clone()), solutionProduct);