X=A- B/A. How to find A?

A =

Step-by-step explanation:

First manipulate the equation as such,

Then use the quadratic formula,

when, .

Which gives  .

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya

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