Simplify.

1/2−3(1/2+1)^2 (I got 6 1/4, is that right?)

(1+1/3)^2−2/9


Also are these right?

−4(3−1)+2 = -6

[(1+5)⋅2−5]⋅2 = 14

2−4÷2+2^3 = 8