anonymous
  • anonymous
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
Mathematics
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anonymous
  • anonymous
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
Mathematics
chestercat
  • chestercat
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sebaxtiangb
  • sebaxtiangb
the 2x2 is suppose to be 2x^2? or is it a multiplication?
anonymous
  • anonymous
yes it is supposed to be 2x^2
sebaxtiangb
  • sebaxtiangb
first solve the exponent first

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sebaxtiangb
  • sebaxtiangb
that will be 4x
sebaxtiangb
  • sebaxtiangb
then add the 4x and the 3x
anonymous
  • anonymous
7x
sebaxtiangb
  • sebaxtiangb
yes
LynFran
  • LynFran
that will not be 4x??
sebaxtiangb
  • sebaxtiangb
then the equation is 7x + 3 = 0
sebaxtiangb
  • sebaxtiangb
no bc u multiply \[2^2\]
sebaxtiangb
  • sebaxtiangb
which is 4
sebaxtiangb
  • sebaxtiangb
then add the variables which is 3x and 4x which is 7x and the equation is then 7x + 3 = 0
sebaxtiangb
  • sebaxtiangb
then u can solve
anonymous
  • anonymous
still confused and idk why
sebaxtiangb
  • sebaxtiangb
what happen?
anonymous
  • anonymous
well i added the variables and got the 7x+3=0
anonymous
  • anonymous
but not sure what comes after
sebaxtiangb
  • sebaxtiangb
subtract 3 from both sides
anonymous
  • anonymous
7x=-3
sebaxtiangb
  • sebaxtiangb
|dw:1438268045761:dw|
sebaxtiangb
  • sebaxtiangb
divide -3 by 7 and then you will your answer
sebaxtiangb
  • sebaxtiangb
and then you have to rounded it
anonymous
  • anonymous
okay
anonymous
  • anonymous
its -0.42, but thats not a selective answer choice
anonymous
  • anonymous
LynFran
  • 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 \[(2x)*(2x)=4x ^{2}\]
anonymous
  • anonymous
okau thank you
anonymous
  • anonymous
what would be the answer tho? bc all these answers are just far off from the selective choice ones
LynFran
  • LynFran
if i say imaginary then i mean?
anonymous
  • anonymous
doesnt eexist
LynFran
  • LynFran
they are imaginary solution ...so they are not real..
anonymous
  • anonymous
okay
anonymous
  • anonymous
nvm still lost
triciaal
  • 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
triciaal
  • 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.
anonymous
  • anonymous
nvm i basically give up
triciaal
  • triciaal
don't give up I am here to help you
triciaal
  • triciaal
I guarantee you will get it what was posted above would discourage me too
anonymous
  • anonymous
everyone is just confusing and i just dont know what any of this question wants
triciaal
  • triciaal
|dw:1438270220942:dw|
triciaal
  • triciaal
identify your a, b and c what do you get ?
anonymous
  • anonymous
2x^2+3x+6=0
triciaal
  • 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
anonymous
  • anonymous
ok
triciaal
  • triciaal
|dw:1438270578195:dw|
anonymous
  • anonymous
then what
triciaal
  • triciaal
tell me what is a, what is b and what is c
triciaal
  • triciaal
are you here?
anonymous
  • anonymous
i already said
anonymous
  • anonymous
2x^2+3x+6=0
triciaal
  • 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
triciaal
  • triciaal
|dw:1438271098708:dw|
anonymous
  • anonymous
i wasnt sayind that with an attitude. i told you i already told you what it was
triciaal
  • triciaal
after you have your values put in the formula I will repost it here
triciaal
  • 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
triciaal
  • triciaal
have you told me what is a, what is b and what is c ? no you have not!
triciaal
  • 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
triciaal
  • triciaal
|dw:1438271419320:dw|
triciaal
  • triciaal
here is the formula I reposted |dw:1438271451098:dw| now substitute the values in this equation

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