SOLUTION: solve {{{2t(t+2)=1}}} I could use some help with this problem please. Thank you...

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: solve {{{2t(t+2)=1}}} I could use some help with this problem please. Thank you...      Log On


   

Question 335768: solve
2t%28t%2B2%29=1
I could use some help with this problem please.
Thank you...
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
2t(t+2)=1
2t^2+4t-1 = 0
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Quadratic formula:
a = 2 ; b = 4 ; c = -1
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t = [-b +- sqrt(b^2-4ac)]/(2a)
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t = [-4 +- sqrt(16-4*2*-1)]/(2*2)
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t = [-4 +- sqrt(16+8)]/4
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t = [-4 +- sqrt(24)]/4
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t = [-4 +- 2sqrt(6)]/4
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t = [-2 +- sqrt(6)]/2
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Cheers,
Stan H.