A community for students.
Here's the question you clicked on:
 0 viewing
steve816
 one year ago
Please help, I'm stuck at 4 AM doing math!
steve816
 one year ago
Please help, I'm stuck at 4 AM doing math!

This Question is Closed

steve816
 one year ago
Best ResponseYou've already chosen the best response.0Solve in the complex number system: \[x^2+3=x\]

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.3\(x^2x+3=0\implies (x\dfrac{1}{2})^2=3+(\dfrac{1}{2})^2\\(x\dfrac{1}{2})^2=\dfrac{11}{4}\)

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.3Can you complete here?

steve816
 one year ago
Best ResponseYou've already chosen the best response.0Is completing the square the only method or was I allowed to use the quadratic formula?

steve816
 one year ago
Best ResponseYou've already chosen the best response.0I can finish off from here, thanks for the help :)

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.3sure, you can use that. This was just faster...

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.3The quadratic equation is derived using the "completing the square" method :)

steve816
 one year ago
Best ResponseYou've already chosen the best response.0Oh really? Never really understood how the quadratic equation worked even though i'm in precalculus.

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.3\[ax^2+bx+c=0\\a(x^2+\frac{b}{a}x)=c\\a(x+\dfrac{b}{2a})^2=c+a\dfrac{b^2}{4a^2}\\(x+\dfrac{b}{2a})^2=\frac{c}{a}+\frac{b^2}{4a^2}\\(x+\dfrac{b}{2a})^2=\dfrac{b^24ac}{4a^2}\\(x+\dfrac{b}{2a})=\pm \sqrt{\dfrac{b^24ac}{4a^2}}\\(x+\dfrac{b}{2a})=\pm \dfrac{\sqrt{b^24ac}}{2a}\\x=\dfrac{b\pm\sqrt{b^24ac}}{2a}\]

steve816
 one year ago
Best ResponseYou've already chosen the best response.0Holy guacamole! :o *jaw drops*

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.0Here's another explanation of deriving the quadratic formula: http://www.1728.org/quadr2.htm

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.3pretty much the same way.

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.0steve  did you check that answer?

steve816
 one year ago
Best ResponseYou've already chosen the best response.0Yup, I got the answer right.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The answer is (11/4)

steve816
 one year ago
Best ResponseYou've already chosen the best response.0that wasn't the answer... @lauren.ascough

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.0I don't get that answer a=1 b=1 c=3 right?

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.0x = 1 + sq root(1 4*1*3) / 2 x = [1 + sq root(11)] / 2

steve816
 one year ago
Best ResponseYou've already chosen the best response.0yeah, that is what I got.

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.0Okay, it's just that I didn't see that answer printed anywhere.

steve816
 one year ago
Best ResponseYou've already chosen the best response.0Thanks for the answer though.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Im stuck at 6AM playing and modding skyrim Why? BECAUSE IM IN VIRTUAL SCHOOL
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.