SOLUTION: Can someone please help? 3x^2+8x-2=0 1. Solve using Quadratic formula 2. Solve using completing the square 3. Tell which method you prefer and why

Question 315345: Can someone please help?
3x^2+8x-2=0
1. Solve using Quadratic formula
2. Solve using completing the square
3. Tell which method you prefer and why
Answer by Edwin McCravy(20055) (Show Source): You can put this solution on YOUR website!

1. Solve using Quadratic formula

, ,

2. Solve using completing the square




Get the constant term on the right and only x-terms on the left



Divide through by 3



Multiply the coefficient of x by :  
Square that value:  
Add that value to both sides:



Factor the left side:  or 
Combine fractions on the right side: 



Take square roots of both sides:





Add  to both sides:

3. Tell which method you prefer and why


The quadratic formula because it's usually easier.

Edwin

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