3x^2+2x+4=-8

Simple and best practice solution for 3x^2+2x+4=-8 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+2x+4=-8 equation:


Simplifying
3x2 + 2x + 4 = -8

Reorder the terms:
4 + 2x + 3x2 = -8

Solving
4 + 2x + 3x2 = -8

Solving for variable 'x'.

Reorder the terms:
4 + 8 + 2x + 3x2 = -8 + 8

Combine like terms: 4 + 8 = 12
12 + 2x + 3x2 = -8 + 8

Combine like terms: -8 + 8 = 0
12 + 2x + 3x2 = 0

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

Divide each side by '3'.
4 + 0.6666666667x + x2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + 0.6666666667x + -4 + x2 = 0 + -4

Reorder the terms:
4 + -4 + 0.6666666667x + x2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 0.6666666667x + x2 = 0 + -4
0.6666666667x + x2 = 0 + -4

Combine like terms: 0 + -4 = -4
0.6666666667x + x2 = -4

The x term is 0.6666666667x.  Take half its coefficient (0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
0.6666666667x + 0.1111111112 + x2 = -4 + 0.1111111112

Reorder the terms:
0.1111111112 + 0.6666666667x + x2 = -4 + 0.1111111112

Combine like terms: -4 + 0.1111111112 = -3.8888888888
0.1111111112 + 0.6666666667x + x2 = -3.8888888888

Factor a perfect square on the left side:
(x + 0.3333333334)(x + 0.3333333334) = -3.8888888888

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| -x+4y=14 | | -.34q-.08q^2=50.5 | | 6x-4=4x+14 | | 6u-34=-6u+14 | | 8x^2=-26x | | y=-4x+14 | | 4k-13=20 | | 2x^2-15=-7x | | 19+3x=13+x | | 14x^2=-21x | | -v+3=5v-57 | | 18x^2=15x | | 4x-4=15x^2 | | 9x^2=27x | | 5x+y=-21 | | 4q^2+16=8q | | 212-4x=32x+16 | | 8p^2-4p=0 | | 3-.5(k+3)=-24 | | y=-5x+9 | | 2z^2+20z=0 | | 11-7x=40-14x | | 6r-6(-7r-2)= | | (4y+8)(3y-4)=0 | | 75-(5x+13)=5(x+8)+x | | 35q=5 | | 70X=21000 | | -66-10x=8x+24 | | (2y+5)(y-4)=0 | | 1X=45 | | W-29=6w | | X=23 |

Equations solver categories