nope, not quite, lets break it down step by step
ok I'm ready
|-4b - 8 | = ?
dont you have to plug -2 into b first?
yeah, what do you get when you do that?
actually, yes, 0
lol i thought so
|-4b - 8 | = |8-8| = 0
|-1 - b^2 | = ?
i got -5
almost, remember that the absolute value sign means that you remove the negative sign at the end |-1-b^2| = |-1-4| = |-5| = 5, with me so far?
last step, find 2b^3 (be careful with signs!)
is it -64?
yup! now all that's left is 5 - 64 = your answer
good! that's it.