SOLUTION: I just submitted a problem and left a very important segment out which altered it completely, I'm sorry!! No wonder no one could solve it, it was not a full function or equation.

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: I just submitted a problem and left a very important segment out which altered it completely, I'm sorry!! No wonder no one could solve it, it was not a full function or equation.       Log On


   

Question 168652This question is from textbook Intermediate Algebra
: I just submitted a problem and left a very important segment out which altered it completely, I'm sorry!! No wonder no one could solve it, it was not a full function or equation. I sure appreciate your time but here is the REAL problem that I'm stuck on!! Thank you.

"Solve each equation for the indicated variable"

p+=++E%5E2R%2F%28r%2BR%29%5E2 Solve for R (E>0) This question is from textbook Intermediate Algebra

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
p = E^2R/(r+R)^2
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P(r^2+ 2rR +R^2) = E^2R
pr^2 + 2prR + pR^2 = E^2R
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E^2R - pR^2 = pr^2 + 2prR
pR^2 + (2pr-E^2)R +pr^2 = 0
R = [(E^2-2pr) +- sqrt[(E^2-2pr)^2 - 4p(pr^2)]/(2p)
I'll let you take it from there.
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Cheers,
Stan H.