Ace school

with brainly

  • Get help from millions of students
  • Learn from experts with step-by-step explanations
  • Level-up by helping others

A community for students.

solve for r r^2+3r=8 Example r^2+3r=1 r=-3+√13/2,-3-√13/2

Mathematics
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this and thousands of other questions

looks like the quadratic equation might help here
r^2 +3r -8 =0 a=1 b=3 c=-8 Use the quadratic formula to get your answer(s) for x.
The quadratic equation is where my problem lies

Not the answer you are looking for?

Search for more explanations.

Ask your own question

Other answers:

Do you know what the quadratic formula is?
http://0.tqn.com/d/create/1/0/i/9/9/-/Quadratic.formula.jpg
((-1) +/- sqrt ((3)^2-(4)(1)(-8)))/((2)(1))
(-1 +/- sqrt (41))/2 ***THAT MEANS*** x = (-1 + sqrt(41))/2 x = (-1 - sqrt(41))/2
Thanks so much
This is what you do whenever factoring is impossible.
Or if you're too lazy to factor :-)... like I usually am LOL
so how would i put x^2+7x=10 into the quadratic equation
Okay 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+7x-10=0 Now what are a, b, and c?
sorry typed problem wrong x^2+7x-10=0
k... so what do you think a, b, and c are?
a is 1 b is 7 c is 10
Yup!
I'll ask you one now. -x^2+2x+3 What is "a" in this case?
-1
yep
my problem is keeping it all in order
Now 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.
I 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 :-)
You can try that problem and we'll compare answers if you want.
ok is it -7+√89/2,-7-√89/2
That's what I got too. You know what you're doing!
You have no idea how much you have helped me thanks again!!!!!
I'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
I truly cannot thank you enough I have been struggling for days
I 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

Not the answer you are looking for?

Search for more explanations.

Ask your own question