Ask your own question, for FREE!
Mathematics 14 Online
OpenStudy (anonymous):

Solve x2 + 6x + 7 = 0. Options are below!!!

OpenStudy (anonymous):

OpenStudy (anonymous):

OpenStudy (anonymous):

OpenStudy (anonymous):

hartnn (hartnn):

know quadratic formula ?

hartnn (hartnn):

Compare your quadratic equation with \(ax^2+bx+c=0\) find a,b,c then the two roots of x are: \(\huge{x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}}\)

OpenStudy (anonymous):

\[\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\]

OpenStudy (anonymous):

How do I apply that to this problem? Like i'm having trouble setting it up

hartnn (hartnn):

none of the options are correct b^2-4ac = 36-28 = 8 so there should be sqrt 8 in options or sqrt 2

hartnn (hartnn):

couldn't u find, a,b,c ?

OpenStudy (anonymous):

Those are the only options.......

hartnn (hartnn):

then your question must be incorrect

hartnn (hartnn):

check it

hartnn (hartnn):

also see your previous question

hartnn (hartnn):

for this its, (-6+- sqrt 8)/2 = (-3+- sqrt2)

OpenStudy (anonymous):

Solve x2 + 6x + 7 = 0

hartnn (hartnn):

for that (-3+- sqrt2)

OpenStudy (anonymous):

Oh my goodnes!!!!1 I'm SO sorry

OpenStudy (anonymous):

i see what occurred

OpenStudy (anonymous):

the question is: Solve 3x2 + 4x = 2

hartnn (hartnn):

right, 3x^2+4x-2=0 now apply the formula can u find,a,b,c first ?

OpenStudy (anonymous):

3, 2, 4?

hartnn (hartnn):

|dw:1352747869498:dw|

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!