Special Case Identified

steps_generator.py

@@ -349,8 +349,10 @@ def generate_fraction_steps (problem):
 def generate_binomial_steps (problem):
     #a(x + b) + c(x + d) = e
     steps = []
+    x = symbols('x')
     current = problem["problem"]
     
+    ## Distribute Terms
     last_len = -1
     while last_len != len(steps):
         last_len = len(steps)
@@ -358,8 +360,29 @@ def generate_binomial_steps (problem):
         if len(steps):
             current = steps[-1]["after"]
     
+    ## Combine Like Terms
     steps.append(algebraic_steps.combine_like_terms(current))
     current = steps[-1]["after"]
+    left, right = current.split("=")
+    left_expr = parse_expr(left, transformations=transformations)
+    
+    ## Subtract constant
+    b = left_expr.subs(x, 0)
+    if b.is_zero == False:
+        if b.is_negative:
+            steps.append(algebraic_steps.add_both_sides(current, -b))
+        elif b.is_positive:
+            steps.append(algebraic_steps.subtract_both_sides(current, b))
+        current = steps[-1]["after"]
+        left, right = current.split("=")
+        left_expr = parse_expr(left, transformations=transformations)
+    
+    ## Divide by coefficient
+    a = left_expr.coeff(x)
+    if a != 1 and a != -1:
+        steps.append(algebraic_steps.divide_both_sides(current, a))
+    elif a == -1:
+        steps.append(algebraic_steps.multiply_both_sides(current, a))
     
     return steps