SOLUTION: Find the value of r that will make the roots of the equation {{{(25+r)x^2 -2 (1+r)x+2=0}}} equal.

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Find the value of r that will make the roots of the equation {{{(25+r)x^2 -2 (1+r)x+2=0}}} equal.      Log On


   

Question 1056040: Find the value of r that will make the roots of the equation %2825%2Br%29x%5E2+-2+%281%2Br%29x%2B2=0 equal.
Answer by ikleyn(52778) About Me  (Show Source):
You can put this solution on YOUR website!
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The discriminant of the equation must be equal to zero.

This condition will give you an equation for "r".


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comment from student: Ahhh I see. I managed to find the value for r. Thank you very much :)
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My response: I am glad to hear it.