$VAR1 = bless( {
 'Breakable' => 0,
 'Val' => '=',
 'Opps' => [
   bless( {
    'Val' => 'y',
    'VarType' => 'Real'
   }, 'Math::Expr::Var' ),
   bless( {
    'Breakable' => 1,
    'Val' => '+',
    'Opps' => [
      bless( {
       'Breakable' => 1,
       'Val' => '+',
       'Opps' => [
        bless( {
         'Breakable' => 1,
         'Val' => '^',
         'Opps' => [
          bless( {
            'Val' => 'ax',
            'VarType' => 'Real'
          }, 'Math::Expr::Var' ),
          bless( {
            'Val' => '2'
          }, 'Math::Expr::Num' )
          ]
        }, 'Math::Expr::Opp' ),
        bless( {
         'Val' => 'bx',
         'VarType' => 'Real'
        }, 'Math::Expr::Var' )
       ]
      }, 'Math::Expr::Opp' ),
      bless( {
       'Val' => 'c',
       'VarType' => 'Real'
      }, 'Math::Expr::Var' )
     ]
   }, 'Math::Expr::Opp' )
  ]
 }, 'Math::Expr::Opp' );