Question

Evaluate the expression below when x = -2.

x2 − 8

x + 6
-3
-1

1

2


3

2

Answer 1

can someone help me

Answer 2

@Nnesha

Answer 3

substitute x for -2

Answer 4

\[\huge\rm \color{Red}{x}^2-8\]
replace x with -2 and then solve!

Answer 5

ok think you so much

Answer 6

wait i don't get it
there are two expression
x^2-8 and x+6 right ?

Answer 7

ya

Answer 8

can you take a screenshot of ur question plz ?

Answer 9

how do you do that

Answer 10

press \(\huge\color{green}{\rm PrntSCr}\)
and then paste that into *paint * save it
click on attach file button to post

Answer 11

if you are using chrome then you can add this extension https://chrome.google.com/webstore/detail/lightshot-screenshot-tool/mbniclmhobmnbdlbpiphghaielnnpgdp?utm_source=chrome-app-launcher-info-dialog

Answer 12

is that it

Answer 13

ohh division you should use */* to show something is dividing \[\frac{ x^2 -8}{ x+6 }\] now substitute x for -2

Answer 14

let me know what you get :)

Answer 15

I got -2/4

Answer 16

how did you get -2 at the numerator ?

Answer 17

remember it's x^2 so you should take square of -2

Answer 18

what are you talking about idk this stuff

Answer 19

@triciaal

Answer 20

\[\huge\rm \frac{ \color{reD}{x}^2 -8}{ x+6 }\] substitute x for -2 put the parentheses

Answer 21

\[\huge\rm \frac{ (?)^2+8 }{ (?)+6 }\]do you see the question marks that's where you should put -2

Answer 22

yes I see it but I need a calculator

Answer 23

you don't really need one.

Answer 24

\[\huge\rm \frac{ (-2)^2+8 }{ (-2)+6 }\]
(-2)^2 is same as -2 times -2

Answer 25

why do we do -2 times-2

Answer 26

(-2)^2 means -2 times -2

Answer 27

ok I just got a calculator and I got 14

Answer 28

@Elsa213

Answer 29

@Hero

Answer 30

how did you get 14 ?
what is -2 times -2 ?