SOLUTION: I am really stumped here and have gotten so confused. the question is If 4n^2+25=-20x what is the value of the discriminant, AND can you please state the number and type of roo

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: I am really stumped here and have gotten so confused. the question is If 4n^2+25=-20x what is the value of the discriminant, AND can you please state the number and type of roo      Log On


   

Question 611543: I am really stumped here and have gotten so confused. the question is
If 4n^2+25=-20x what is the value of the discriminant, AND can you please state the number and type of roots/solutions/zeros.
Thanks so much!!
KF
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi, 

4x^2+25=-20x 

4x^2+20x + 25=0

x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ 

x+=+%28-20+%2B-+sqrt%28+400-400%29+%29%2F%288%29+ 

 sqrt%28+400-400%29=+0

   x = -20/8 = -5/2, one real root, (-5/2,0) is the x-intercept