## anonymous one year ago I. Given the following polynomial: . Check all that apply.  The value of the discriminant is 169.  There are 2 real roots.  There are 2 irrational roots.  The graph intersects the y-axis twice.  The parabola is directed upward.  The axis of symmetry is located at  The vertex is located at:  The roots are:  The graph intersects the y axis at (0, -15).  The graph intersects the x-axis at (-5, 0) and (1.5, 0) II. Use the quadratic formula to solve the following:

1. triciaal

sorry cannot see the polynomial

2. triciaal

|dw:1441043548155:dw|

3. triciaal

|dw:1441043576921:dw|

4. triciaal

|dw:1441043626436:dw|

5. triciaal

|dw:1441043717243:dw|

6. triciaal

|dw:1441043802507:dw|

7. anonymous

2x+7x-15=0 there is a exponet of 2 next to the 2x

8. triciaal

|dw:1441043906385:dw|

9. triciaal

you can shift the number 6 key to get the symbol for exponents

10. triciaal

|dw:1441044017872:dw|

11. anonymous

what do you mean tbh i dont nun of this stuff am a beginner at math and they gave me 9th grade math

12. triciaal

|dw:1441044127218:dw||dw:1441044257083:dw|

13. triciaal

|dw:1441044381815:dw|

14. anonymous

what does that mean can u explain that too me plz im kinda slow

15. triciaal

I don't understand your previous comment. was it meant for me? did you delete mine about using the exponent symbol by mistake?

16. anonymous

no

17. triciaal

let's review the complete question was not posted. I gave general information you can use for any polynomial. you posted the polynomial . I explained how to get the symbol for exponents. I solve the equation. you expressed that this is very new material and you need extra help. please review everything and let me know what questions you have so I can give you the help you need. You might want to takes notes for the general information you will need to know it later. I will check back in a few minutes if you have questions.

18. anonymous

19. anonymous

@mandingo17

20. triciaal

does this mean you have no questions for me and you don't need my help anymore either?

21. anonymous

no i need ur help miss

22. triciaal

regardless, solve using the formula

23. triciaal

|dw:1441047292334:dw|

24. triciaal

identify your a, b and c

25. anonymous

i dont know how to do that all i can do is basic math

26. triciaal

stop saying that and follow along you CAN do this especially since I am guiding you.

27. anonymous

okai

28. triciaal

REPOST |dw:1441047436041:dw|

29. triciaal

|dw:1441047469870:dw|

30. triciaal

match the 2 equations what is a, what is b and what is c?

31. triciaal

|dw:1441047651597:dw|

32. triciaal

remember when you take the square root you have 2 values , positive and negative

33. triciaal

hello?

34. anonymous

miss i dont understand

35. triciaal

|dw:1441048159717:dw|

36. anonymous

i subtract em?

37. triciaal

the general format for the quadratic is ax^2 + bx + c = 0 here you have 3x^2 -x + 2 =0 when you compare them then you see that a = 3, b = -1 and c = 2 are you ok with this now?

38. anonymous

no im really have a difficult time

39. triciaal

look at the first equation with a, b and c in it compare it with the second equation before the x^2 is a and the number before the x^2 is 3 therefore a = 3

40. triciaal

do the same with the x term bx = -x same as -1x the -1 is understood here b = -1

41. triciaal

what is the value of c?