Answer:
Step-by-step explanation:
I assume that you mean c squared o+ 1/2, but without brackets, there are all sorts of possibilities. I'll do the one I think it is first.
c^2 + a
9^2 + 1/2
81 + 1/2
81.5
But it could also be
2* 9 + 1/2
18 1/2
18.5
And to make things worse, it could be
9^( 2 + 1/2)
9^(2.5)
243
