These are absolute value questions.
[-4b -8] + [-1b -b^2] + 2b^3. b=-2 given
[8] + [2 (4)] +-8
Answer =8
Is this correct?
[-4b -8] + [-1b -b^2] + 2b^3
plug in b=2
(-4(-2) - 8) + (-1(-2) - (-2)^2) + 2*(-2)^3
(8-8) + (2-4) + 2(-8)
0 - 2 - 16
-18