3x^2+6x+8=0

Simple and best practice solution for 3x^2+6x+8=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 3x^2+6x+8=0 equation:


Simplifying
3x2 + 6x + 8 = 0

Reorder the terms:
8 + 6x + 3x2 = 0

Solving
8 + 6x + 3x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
3 the coefficient of the squared term: 

Divide each side by '3'.
2.666666667 + 2x + x2 = 0

Move the constant term to the right:

Add '-2.666666667' to each side of the equation.
2.666666667 + 2x + -2.666666667 + x2 = 0 + -2.666666667

Reorder the terms:
2.666666667 + -2.666666667 + 2x + x2 = 0 + -2.666666667

Combine like terms: 2.666666667 + -2.666666667 = 0.000000000
0.000000000 + 2x + x2 = 0 + -2.666666667
2x + x2 = 0 + -2.666666667

Combine like terms: 0 + -2.666666667 = -2.666666667
2x + x2 = -2.666666667

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = -2.666666667 + 1

Reorder the terms:
1 + 2x + x2 = -2.666666667 + 1

Combine like terms: -2.666666667 + 1 = -1.666666667
1 + 2x + x2 = -1.666666667

Factor a perfect square on the left side:
(x + 1)(x + 1) = -1.666666667

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| x^2+1xy-12y^2= | | 6x-2(3x-10)=5 | | 6x+18=6+3x | | 7x+13=2x+3 | | 4=3+5x | | 3x-x-5=15 | | 1=13+6x | | 7y^2+42y-14=0 | | 10v-7=24 | | 16k+21=7k+84 | | 15=2m+3 | | 12a-64=-4a | | 2(5r+6)=2.5(4r+6) | | 14=5k-31 | | 9n+18=81 | | x+19=2x | | 5y+9x=90 | | -13f=-5f+48 | | 3(f+2)=-21 | | 13=-2w | | 4-3p=34 | | 4x-17=31 | | 171+120=x | | 3x=x-12 | | 11x+27=5x+111 | | 11x+27=(11x+27)5+111 | | 396+63=x | | 396+65=x | | 47-5x=4x+24 | | 3x+7=3x-5 | | 11-7x=59-21x | | 396+60=x |

Equations solver categories