Math homework, and there is no answer key to check my work

What is negative six to the 2nd power minus (bracket) 56 divided by (parenthesis) negative 17 plus thirty one (parenthesis) (bracket) plus 25

-6^2 - [ 56 / ( -17 + 31) ] + 25 =

-36 - [ 56 / 14 ] + 25  =

-36 - 4 + 25  =

-15

DO NOT POST TWICE LIKE THIS!!

We are unlikely to get through all the questions today.  Answering yours twice - now three times - means that 2, now 3, other peole will NOT get their question answered today!!!

BE THOUGHTFUL OF OUR TIME AND OTHER QUESTION ASKERS REQUIREMENTS PLEASE!!

Now I see that you asked 3 times!!

I think next time, if I see the questions quickly enough, I will white out all multiple asked questions.  

So that there are no copies at all of it left on the forum.  Not even ONE !!