A community for students.
Here's the question you clicked on:
 0 viewing
kevin8374
 3 years ago
solve for r
r^2+3r=8
Example r^2+3r=1
r=3+√13/2,3√13/2
kevin8374
 3 years ago
solve for r r^2+3r=8 Example r^2+3r=1 r=3+√13/2,3√13/2

This Question is Closed

philips13
 3 years ago
Best ResponseYou've already chosen the best response.1looks like the quadratic equation might help here

brinethery
 3 years ago
Best ResponseYou've already chosen the best response.2r^2 +3r 8 =0 a=1 b=3 c=8 Use the quadratic formula to get your answer(s) for x.

kevin8374
 3 years ago
Best ResponseYou've already chosen the best response.0The quadratic equation is where my problem lies

brinethery
 3 years ago
Best ResponseYou've already chosen the best response.2Do you know what the quadratic formula is?

brinethery
 3 years ago
Best ResponseYou've already chosen the best response.2((1) +/ sqrt ((3)^2(4)(1)(8)))/((2)(1))

brinethery
 3 years ago
Best ResponseYou've already chosen the best response.2(1 +/ sqrt (41))/2 ***THAT MEANS*** x = (1 + sqrt(41))/2 x = (1  sqrt(41))/2

brinethery
 3 years ago
Best ResponseYou've already chosen the best response.2This is what you do whenever factoring is impossible.

brinethery
 3 years ago
Best ResponseYou've already chosen the best response.2Or if you're too lazy to factor :)... like I usually am LOL

kevin8374
 3 years ago
Best ResponseYou've already chosen the best response.0so how would i put x^2+7x=10 into the quadratic equation

brinethery
 3 years ago
Best ResponseYou've already chosen the best response.2Okay so your format is going to be ax^2+bx+c So with x^2+7x=10, you always always always get everything on the left side. You're setting it equal to zero. x^2+7x10=0 Now what are a, b, and c?

kevin8374
 3 years ago
Best ResponseYou've already chosen the best response.0sorry typed problem wrong x^2+7x10=0

brinethery
 3 years ago
Best ResponseYou've already chosen the best response.2k... so what do you think a, b, and c are?

kevin8374
 3 years ago
Best ResponseYou've already chosen the best response.0a is 1 b is 7 c is 10

brinethery
 3 years ago
Best ResponseYou've already chosen the best response.2I'll ask you one now. x^2+2x+3 What is "a" in this case?

kevin8374
 3 years ago
Best ResponseYou've already chosen the best response.0my problem is keeping it all in order

brinethery
 3 years ago
Best ResponseYou've already chosen the best response.2Now if there's a term, say b=2 and you need to plug it into your formula, the first thing you're putting in is b. So how to do that: (2). So that will be a +2.

brinethery
 3 years ago
Best ResponseYou've already chosen the best response.2I understand. And I would recommend to do the problem in as many steps as you need to. And to slow down and pay close attention. I took an engineering problems course last quarter and I made a lot of mistakes when I didn't pay attention :)

brinethery
 3 years ago
Best ResponseYou've already chosen the best response.2You can try that problem and we'll compare answers if you want.

kevin8374
 3 years ago
Best ResponseYou've already chosen the best response.0ok is it 7+√89/2,7√89/2

brinethery
 3 years ago
Best ResponseYou've already chosen the best response.2That's what I got too. You know what you're doing!

kevin8374
 3 years ago
Best ResponseYou've already chosen the best response.0You have no idea how much you have helped me thanks again!!!!!

brinethery
 3 years ago
Best ResponseYou've already chosen the best response.2I'm glad :) So step 1: Get everything on the left side so that it's set equal to zero. step 2: write down what your a, b, and c values are step 3: plug in to the formula and go slow

kevin8374
 3 years ago
Best ResponseYou've already chosen the best response.0I truly cannot thank you enough I have been struggling for days

brinethery
 3 years ago
Best ResponseYou've already chosen the best response.2I would recommend Paul's online notes as an alternative to your book. Most algebra books truly suck. http://tutorial.math.lamar.edu/Classes/Alg/SolveQuadraticEqnsII.aspx
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.