SOLUTION: I am working to understand how to determine when to use the different methods of solving a quadratic eqauation. I am sure that it is so simple I just cant see. Thank you very y

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: I am working to understand how to determine when to use the different methods of solving a quadratic eqauation. I am sure that it is so simple I just cant see. Thank you very y      Log On


   

Question 29795: I am working to understand how to determine when to use the different methods of solving a quadratic eqauation. I am sure that it is so simple I just cant see.
Thank you very your assistance.
k/2-k+2/k=5 Thanks again! I really do apprecite eveyting you are doing in daycare.
Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!
k/2-k+2/k=5 ...MULTIPLYING BY LCM....2K
K^2-2K^2+4=10K
K^2+10K-4=0
USING THE FORMULA
x+=+%28-10+%2B-+sqrt%28+%28-10%29%5E2-4%2A1%2A4+%29%29%2F%282%2A1%29+
x+=+%28-10+%2B-+sqrt%28+100-16+%29%29%2F%282%29+
x+=+%28-10%2B-+sqrt%28+84+%29%29%2F%282%29+
x+=+%28-10+%2B-+%282%29%2Asqrt%28+21+%29%29%2F%282%29+
x+=+%28-5+%2B-+sqrt%28+21+%29%29+