Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

 (1): "x9"   was replaced by   "x^9". 

Step  1  :

Equation at the end of step  1  :

  3x212 • x9

Step  2  :

Multiplying exponential expressions :

 2.1    x²¹² multiplied by x⁹ = x^{(212 + 9)} = x²²¹

Final result :

  3x221