Solution - Simplification or other simple results

Step  1  :

Equation at the end of step  1  :

Step  2  :

 2.1     12 = 22•3

(12)² = (2²•3)² = 2⁴ • 3²

Equation at the end of step  2  :

Step  3  :

            -44
 Simplify   ———
            22 

Canceling Out :

 3.1      Canceling out  2² as it appears on both sides of the fraction line

Final result :

  -11