## anonymous one year ago Help please?? Solve 2x2 + 3x + 6 = 0. Round solutions to the nearest hundredth. (4 points) x ≈ -2.64 and x ≈ 1.14 x ≈ -1.14 and x ≈ 2.64 No real solutions x ≈ -1.11 and x ≈ -4.89

1. sebaxtiangb

the 2x2 is suppose to be 2x^2? or is it a multiplication?

2. anonymous

yes it is supposed to be 2x^2

3. sebaxtiangb

first solve the exponent first

4. sebaxtiangb

that will be 4x

5. sebaxtiangb

then add the 4x and the 3x

6. anonymous

7x

7. sebaxtiangb

yes

8. LynFran

that will not be 4x??

9. sebaxtiangb

then the equation is 7x + 3 = 0

10. sebaxtiangb

no bc u multiply \[2^2\]

11. sebaxtiangb

which is 4

12. sebaxtiangb

then add the variables which is 3x and 4x which is 7x and the equation is then 7x + 3 = 0

13. sebaxtiangb

then u can solve

14. anonymous

still confused and idk why

15. sebaxtiangb

what happen?

16. anonymous

well i added the variables and got the 7x+3=0

17. anonymous

but not sure what comes after

18. sebaxtiangb

subtract 3 from both sides

19. anonymous

7x=-3

20. sebaxtiangb

|dw:1438268045761:dw|

21. sebaxtiangb

22. sebaxtiangb

and then you have to rounded it

23. anonymous

okay

24. anonymous

its -0.42, but thats not a selective answer choice

25. anonymous

@sebaxtiangb

26. LynFran

the graph of such equation look like this i hope form it u will be able to get ur answer |dw:1438275951759:dw|this means there are imaginary solutions in other words.... and @sebaxtiangb 2x^2 is not equal to 4x \[(2x)*(2x)=4x ^{2}\]

27. anonymous

okau thank you

28. anonymous

what would be the answer tho? bc all these answers are just far off from the selective choice ones

29. LynFran

if i say imaginary then i mean?

30. anonymous

doesnt eexist

31. LynFran

they are imaginary solution ...so they are not real..

32. anonymous

okay

33. anonymous

nvm still lost

34. triciaal

the quadratic equation is in the form ax^2 + bx + c = 0 to solve |dw:1438269910092:dw| using your equation identify your a, b and c values and substitute in the equation

35. triciaal

to the nearest hundredths means to 2 decimal places. calculate to 3 places then round. to round if the 3rd digit is 5 or more add 1 to the 2nd place if the 3rd place is less than 5 you drop it.

36. anonymous

nvm i basically give up

37. triciaal

38. triciaal

I guarantee you will get it what was posted above would discourage me too

39. anonymous

everyone is just confusing and i just dont know what any of this question wants

40. triciaal

|dw:1438270220942:dw|

41. triciaal

identify your a, b and c what do you get ?

42. anonymous

2x^2+3x+6=0

43. triciaal

that is your given equation in the correct format now look at the box above and compare the 2 equations tell me what is a what is b and what is c

44. anonymous

ok

45. triciaal

|dw:1438270578195:dw|

46. anonymous

then what

47. triciaal

tell me what is a, what is b and what is c

48. triciaal

are you here?

49. anonymous

50. anonymous

2x^2+3x+6=0

51. triciaal

if you want to get this you need to actually read properly and watch your attitude. I am very patient. you gave me the given equation. I said compare the equations and tell me the values of a, b and c

52. triciaal

|dw:1438271098708:dw|

53. anonymous

i wasnt sayind that with an attitude. i told you i already told you what it was

54. triciaal

after you have your values put in the formula I will repost it here

55. triciaal

and I am telling you not to tell me you already told me because if you read properly you will see you have not answered what I am asking so we can get the problem done

56. triciaal

have you told me what is a, what is b and what is c ? no you have not!

57. triciaal

I told you i am here to help you and to make sure you can do the problem in order to do that you need to answer the questions i ask and let me know when something is still not clear

58. triciaal

|dw:1438271419320:dw|

59. triciaal

here is the formula I reposted |dw:1438271451098:dw| now substitute the values in this equation