Question

help

Answer 1

/-4b-8/+/-1-b^2/+b^3
b=-2

Answer 2

Well, if b = -2 then you just want to plug in the -2 where b is. THen you solve

Answer 3

but what about the absolute value im lost

Answer 4

This is absolute value equation?

Answer 5

yes / / are the absolute value signs

Answer 6

Hmm.. what grade are you? I have studied equation in my high school. But I'm afraid this is not like that.

Answer 7

10th

Answer 8

but this is 11th grade math

Answer 9

Here we go
|(−4)*(−2)−8|+|−1−(−2)^2|+(−2)^3
=0+5+(-8)
=−3

Answer 10

It's 10 grade in my country :D

Answer 11

do you mind one more

Answer 12

solve the equation check for extraneous solutions
9/9-8x/=2x+3

Answer 13

can you help @Kevin

Answer 14

so, we must find x value?

Answer 15

yes

Answer 16

and check for extraneous solutions whatever that means

Answer 17

Ok wait for a few minute, I'm thirsty :D

Answer 18

lol ok

Answer 19

are you almost done lol i have one more assignment to do

Answer 20

I know the answer, I just try to type it in formal writing :D

Answer 21

if you want just the answer, i can give it :)

Answer 22

i have to show my work

Answer 23

3 minutes :D

Answer 24

ok

Answer 25

9|9-8x| = |81 - 72x|

(81-72x)= 0
x = 9/8 for x >= 0

-(81-7x)=0
x = 9/8 for x < 0

Answer 26

|81 - 72x| = 2x + 3

i
(81 - 72x) = 2x + 3
-74x = -78
x = 39/37

ii
-(81 - 72x) = 2x + 3
-81 + 72x = 2x + 3
70x = 84
x = 6/5

Answer 27

So the answer is x = 39/37 or x = 6/5

Answer 28

That's how my teacher teach me in my country, I dunno in your country :/

Answer 29

But although our teacher method is different, the answer will be same

Answer 30

where are you from

Answer 31

So what's your other question. I'm going to go sleep after that :D

Answer 32

Indonesia

Answer 33

wow lol and this was the last one lol

Answer 34

Lol.., so this has been done right?

Answer 35

I'm going to go sleep now, if you have any question you can pm me :D
I study at computer science now.

Answer 36

is there an extraneous solution

Answer 37

did you mean this

(81-72x)= 0
x = 9/8 for x >= 0

-(81-7x)=0
x = 9/8 for x < 0

I dunno what is extraneous solution since it's using english language. lol

Answer 38

well I'm understand what you mean

Answer 39

since we can plug both of 39/37 and 6/5 in so there are no extraneous solution

Answer 40

you can check 39/37 and 6/5 to the original equation. They will match.