13 Test file number 32

  13.1 Problem number 17
  13.2 Problem number 18
  13.3 Problem number 19
  13.4 Problem number 20
  13.5 Problem number 67

Test folder name:

test_cases/1_Algebraic_functions/1.2_Trinomial_products/1.2.1_Quadratic/32_1.2.1.1-a+b_x+c_x^2-^p