9 Test file number 41

  9.1 Problem number 165
  9.2 Problem number 201
  9.3 Problem number 208
  9.4 Problem number 210
  9.5 Problem number 216
  9.6 Problem number 218

Test folder name:

test_cases/1_Algebraic_functions/1.2_Trinomial_products/1.2.2_Quartic/41_1.2.2.4-f_x-^m-d+e_x^2-^q-a+b_x^2+c_x^4-^p