$\"\"$

The replacement set is $\"\"$

Replace a in $\"\"$ with each value in the replacement set.

Replace a in $\"\"$ with each value in the replacement set and check

whether the equation is true or not.

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

Since a =8 makes the equation true, the solution of $\"\"$ is 8. $\"\"$ \ \

The solution set is $\"\"$ .