## anonymous one year ago Evaluate the expression below when x = -2. x2 − 8 x + 6 -3 -1 1 2 3 2

1. anonymous

can someone help me

2. anonymous

@Nnesha

3. Nnesha

substitute x for -2

4. Nnesha

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

5. anonymous

ok think you so much

6. Nnesha

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

7. anonymous

ya

8. Nnesha

can you take a screenshot of ur question plz ?

9. anonymous

how do you do that

10. Nnesha

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

11. Nnesha

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

12. anonymous

13. anonymous

is that it

14. Nnesha

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

15. Nnesha

let me know what you get :)

16. anonymous

I got -2/4

17. Nnesha

how did you get -2 at the numerator ?

18. Nnesha

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

19. anonymous

what are you talking about idk this stuff

20. anonymous

@triciaal

21. Nnesha

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

22. Nnesha

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

23. anonymous

yes I see it but I need a calculator

24. Nnesha

you don't really need one.

25. Nnesha

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

26. anonymous

why do we do -2 times-2

27. Nnesha

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

28. anonymous

ok I just got a calculator and I got 14

29. anonymous

@Elsa213

30. anonymous

@Hero

31. Nnesha

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