b+c^2 There is no way to simplify that.
It is: 4b+6
b times b times b = b3 b plus b plus b = 3b
It is 2a-b simplified
It is: b+4 when simplified
= 4a2 + 2ab 2b2
According to the Law of Absorption, A+(A*B) = A. Boolean B is "absorbed" by A.Similarly, A*(A+B) = A.