Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

 (1): "x7"   was replaced by   "x^7". 

Step  1  :

Multiplying exponential expressions :

 1.1    x²¹⁷ multiplied by x⁷² = x^{(217 + 72)} = x²⁸⁹

Final result :

  x289