Question

PLEASE HELP ME
|-4b - 8| + |-1 - b^2| + 2b^3; b = -2
please explain steps?

Answer 1

i ca t really help you but if you go to brainly.com they can help, thats were my sister got her answer and her quesion was pretty close to this

Answer 2

okay ill try that

Answer 3

substitute -2 for every b. Take it one piece at a time. Do you know how to do this part
|-4(-2) - 8| =

Answer 4

why do you substitute -2 for every b? (i have to explain my steps) @peachpi

Answer 5

oh wait duh it makes so much sense now! but how do i work in the absolute value? do i just ignore it?

Answer 6

sub the 2 because that's what they're asking you to do.
don't ignore the absolute value signs. Make what you end up with positive, then drop them.

Answer 7

|-4(-2) - 8|
= |8 - 8|
= |0|
= 0

Answer 8

ohhhh okay thank you!!

Answer 9

try this part
|-1 - b^2|

Answer 10

so it would be
|-1 - (-2)^2
|-1 - -4|
|-1 + 4|
|3|
=3

Answer 11

@peachpi

Answer 12

for that part

Answer 13

close. When you do (-2)² you get should have gotten 4 because a negative times a negative is a positive

Answer 14

oh right! okay thank you! when i get my answer ill type it here

Answer 15

ok

Answer 16

is it -11? @peachpi

Answer 17

yes -11

Answer 18

thank you!

Answer 19

you're welcome