Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

 (1): "x2"   was replaced by   "x^2".  1 more similar replacement(s).

Step  1  :

Equation at the end of step  1  :

  ((x4) -  5x2) -  4

Step  2  :

Trying to factor by splitting the middle term

 2.1     Factoring  x⁴-5x²-4 

The first term is,  x⁴  its coefficient is  1 .
The middle term is,  -5x²  its coefficient is  -5 .
The last term, "the constant", is  -4 

Step-1 : Multiply the coefficient of the first term by the constant   1 • -4 = -4 

Step-2 : Find two factors of  -4  whose sum equals the coefficient of the middle term, which is   -5 .

Observation : No two such factors can be found !!
Conclusion : Trinomial can not be factored

Final result :

  x4 - 5x2 - 4