SOLUTION: What is the value of k if one root root of (3k+1)x^2=-5 is 1? Please help me :)

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Question 118941: What is the value of k if one root root of (3k+1)x^2=-5 is 1? Please help me :)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
What is the value of k if one root root of (3k+1)x^2=-5 is 1? Please help me :)
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Rearrange:
f(x) = (3k+1)x^2+5
If 1 is a root, f(1) = zero
But f(1) = (3k+1)*1^2+5 = 0
3k+1+5 = 0
3k = -6
k = -2
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Cheers,
Stan H.