Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "^-4" was replaced by "^(-4)".

Step  1  :

 1.1     10 = 2•5

(10)^-4 = (2•5)^(-4) = (2)^(-4) • (5)^(-4)

Equation at the end of step  1  :

  90000 • ((2)(-4)•(5)(-4))

Step  2  :

Canceling Out :

 2.1      Canceling out  2⁴ as it appears on both sides of the fraction line

Canceling Out :

 2.2      Canceling out  5⁴ as it appears on both sides of the fraction line

Final result :

  9