Solution - Power equations

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "^-21" was replaced by "^(-21)".

Step  1  :

 1.1     10 = 2•5

(10)^-21 = (2•5)^(-21) = (2)^(-21) • (5)^(-21)

Equation at the end of step  1  :

  2 • ((2)(-21)•(5)(-21))

Step  2  :

Dividing exponents :

 2.1    2¹   divided by   2²¹   = 2^{(1 - 21)} = 2^(-20) = ¹/_2²⁰

Final result :

      1                                       
  ————————— = 2.00000 • 10-21 
  (220•521)