Solution - Power equations

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "^-20" was replaced by "^(-20)".

Step  1  :

 1.1     10 = 2•5

(10)^-20 = (2•5)^(-20) = (2)^(-20) • (5)^(-20)

Equation at the end of step  1  :

  1986 • ((2)(-20)•(5)(-20))

Step  2  :

Dividing exponents :

 2.1    2¹   divided by   2²⁰   = 2^{(1 - 20)} = 2^(-19) = ¹/_2¹⁹

Final result :

     993                                      
  ————————— = 1.98600 • 10-17 
  (219•520)