SOLUTION: solve the equation by use of the quadratic formula.
3x^2=2x+6
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Question 1121191: solve the equation by use of the quadratic formula.
3x^2=2x+6
Found 3 solutions by josmiceli, Boreal, ikleyn:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
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and
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Rewrite as 3x^2-2x-6=0. This setting everything on one side equalling 0 must be done.
a=3 b= -2 c= -6
x=(1/6)(2+/- sqrt(4-4*3*-6)); sqrt term is sqrt (76), or 2 sqrt (19)
The 2s on the top cancel out part of the 6 below
x=(1/3)(1+/- sqrt(19))
This is about +1.7 and -1.1
Answer by ikleyn(52779) (Show Source): You can put this solution on YOUR website!
.
If you have difficulties solving quadratic equations using quadratic formula, then you can learn how to do it from the lessons
- Introduction into Quadratic Equations
- PROOF of quadratic formula by completing the square
in this site.
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