A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
Solve x2 + 4x + 8 = 0
anonymous
 4 years ago
Solve x2 + 4x + 8 = 0

This Question is Closed

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0You have to use the quadratic equation, do you know it?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[x=\frac{ b \pm \sqrt{b^24ac} }{ 2a }\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ax2+bx+c=0 Formula: (b+sqrt(b squared 4*a*c))/2a

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0a=1, b=4, c=8, plug 'em in

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0x equals negative 2 plus or minus 4 I?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0+ stands for two possible resoults, both are correct

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[ax^2 + bx + c = 0\]\[x^2 + 4x + 8 = 0\]a = 1 b = 4 c = 8 \[x=\frac{ b \pm \sqrt{b^24ac} }{ 2a } \] As BluFoot mentioned, just plug them in.\[x=\frac{ (4) \pm \sqrt{(4)^24(1)(8)} }{ 2(1) } \]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Now lets simplify that a bit. \[x=\frac{ (4) \pm \sqrt{(4)^24(1)(8)} }{ 2(1)} \] \[x=\frac{ (4) \pm \sqrt{1632} }{ 2 }\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0x equals negative 4 plus or minus 4 I?
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.