Answer:
15
Explanation:
To solve this you need to use the order of operations.
So the first thing you need to solve is what is in the parentheses.
1*1 (5*5) - 1 - 9
1*1*25 - 1 - 9
Next is multiplication:
So 1*25 - 1 - 9
25 - 1 - 9
Then subtraction:
25 - 1 - 9
24 - 9
15