SOLUTION: find the value of k in order to have equal roots of 2x^2-kx+5=0

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Question 891099: find the value of k in order to have equal roots of 2x^2-kx+5=0
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
highlight_green%282x%5E2-kx%2B5=0%29 want equal roots, meaning discriminant is 0.

%28-k%29%5E2-4%2A2%2A5=0
k%5E2-40=0
k%5E2=40
k=0%2B-+sqrt%282%2A2%2A5%29
highlight%28k=0%2B-+2sqrt%285%29%29


(The 0 is included only to allow site rendering; otherwise is unnecessary.)

Answer by MathTherapy(10551) About Me  (Show Source):
You can put this solution on YOUR website!

find the value of k in order to have equal roots of 2x^2-kx+5=0


highlight_green%28k+=+0%2B-+2sqrt%2810%29%29

 

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