To simplify the expression, we first need to combine like terms.

B-6/4-b2 can be simplified to (-6/4) - b^2

2/2b - b^2 can be simplified to 1/b - b^2

Now we can combine the two simplified expressions:

(-6/4) - b^2 + 1/b - b^2

To combine the terms, we need to make a common denominator:

-6/4 = -3/2

(-3/2) - b^2 + 1/b - b^2

Now we can combine the numerical terms and the b terms:

(-3/2) + 1/b - 2b^2