9
[tex]5^{2} -1^{5} * 2^{4}[/tex]
5²=25
[tex]1^{5}=1[/tex]
[tex]2^{4} =16[/tex]
25-1*16 is now our new equation. Multiply first.
1*16=16. Now subtract.
25-16=9. Remember to follow PEMDAS.