if all you have to do is evaluate the expression when b = -2, then the value is
[-4b-8]+[-1-b^2]+2b^3
[-4(-2)-8]+[-1-(-2)^2]+2(-2)^3
[8-8]+[-1-4]+2(-8)
0 - 5 - 16
-21
[-4b-8]+[-1-b^2]+2b^3; b=-2
please can someone explain
2 answers
complicated but I think I understand thanks so much