SOLUTION: Use the quadratic formula to solve the equation. 5k^2+10k-4=0 k=

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Question 1032674: Use the quadratic formula to solve the equation.
5k^2+10k-4=0
k=
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Okay, using
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
we have
a = 5
b = 10
c = -4
Now plug in and get
k+=+%28-10+%2B-+sqrt%28+10%5E2-4%2A5%2A%28-4%29+%29%29%2F%282%2A5%29+
k+=+%28-10+%2B-+sqrt%28180%29%29%2F10
k+=+%28-10+%2B-+6%2Asqrt%285%29%29%2F10
k+=+%28-5+%2B-+3%2Asqrt%285%29%29%2F5
That is the exact solution...use your calculator if you need numbers...