Answer:
2/9
Explanation:
=> 1/2 (5/6)^2 - 1/8
=> 1/2 (25/36) - 1/8
=> 25/72 - 1/8
=> make 1/8 to have a denominator of 72.
=> multiply the numerator and denominator by 9/9
=> 1/8 becomes 9/72
soo
=> 25/72 - 9/72
=> 16/72
^the greatest common factor is 8
=> 2/9
2/9 is your answer :)