## Tia_Sweetheart17 3 years ago this is a quadratic equation. i know the formula i just need to know how to do it. x^2+2x-24=0

1. gandalfwiz

2. Tia_Sweetheart17

yeah

3. gandalfwiz

Wait- just re read the question. You're looking to use the quadratic formula, right?

4. Tia_Sweetheart17

yes

5. gandalfwiz

Okay, good. So your a is 1, your b is 2, and your c is -24 so wherever you see an a in the formula, you put a 1, 2 for the b, and -24 for the c

6. gandalfwiz

So, the formula starts with (-b)^2. For that b, you'd put in 2. Do the same with the rest of the a's,b's, and c's and then just solve for x

7. gandalfwiz

Is that good or do you want to do the process together?

8. Tia_Sweetheart17

could we do it together to make sure i'm doing it right?

9. gandalfwiz

sure!

10. gandalfwiz

Alright, to heck with the stupid equation. I'm drawing it

11. gandalfwiz

|dw:1331687946988:dw|

12. gandalfwiz

Okay, so lets do the a's first

13. gandalfwiz

Since your a is 1, that's really simple because it only ever needs to get multiplied by the 2, and 2*1=1. So for a, you don't need to make any changes

14. gandalfwiz

Lets to b next. |dw:1331688080301:dw|

15. gandalfwiz

Sorry about that extra a; I forgot to mention it when we did a but it's the same situation. Because a is 1 and it's being multiplied, it makes no difference

16. gandalfwiz

Any questions so far?

17. Tia_Sweetheart17

no

18. gandalfwiz

Okay :) Now lets do c.|dw:1331688316770:dw|

19. gandalfwiz

And all of that is equal to x Now we need to solve for x

20. gandalfwiz

|dw:1331688455475:dw|

21. gandalfwiz

|dw:1331688519484:dw|

22. gandalfwiz

|dw:1331688549330:dw|

23. gandalfwiz

|dw:1331688578241:dw|

24. gandalfwiz

|dw:1331688607188:dw|

25. gandalfwiz

And that's all there is :)

26. Tia_Sweetheart17

thank you so much. i think i got it.

27. gandalfwiz

You're welcome :) medal?

28. Tia_Sweetheart17

sure

29. gandalfwiz

:)

30. Tia_Sweetheart17

could you help me again?