3x^2=-2x-6

Simple and best practice solution for 3x^2=-2x-6 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-6 equation:


Simplifying
3x2 = -2x + -6

Reorder the terms:
3x2 = -6 + -2x

Solving
3x2 = -6 + -2x

Solving for variable 'x'.

Reorder the terms:
6 + 2x + 3x2 = -6 + -2x + 6 + 2x

Reorder the terms:
6 + 2x + 3x2 = -6 + 6 + -2x + 2x

Combine like terms: -6 + 6 = 0
6 + 2x + 3x2 = 0 + -2x + 2x
6 + 2x + 3x2 = -2x + 2x

Combine like terms: -2x + 2x = 0
6 + 2x + 3x2 = 0

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

Divide each side by '3'.
2 + 0.6666666667x + x2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + 0.6666666667x + -2 + x2 = 0 + -2

Reorder the terms:
2 + -2 + 0.6666666667x + x2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 0.6666666667x + x2 = 0 + -2
0.6666666667x + x2 = 0 + -2

Combine like terms: 0 + -2 = -2
0.6666666667x + x2 = -2

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 = -2 + 0.1111111112

Reorder the terms:
0.1111111112 + 0.6666666667x + x2 = -2 + 0.1111111112

Combine like terms: -2 + 0.1111111112 = -1.8888888888
0.1111111112 + 0.6666666667x + x2 = -1.8888888888

Factor a perfect square on the left side:
(x + 0.3333333334)(x + 0.3333333334) = -1.8888888888

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| -38=-17+7x | | 140=-4-12x | | sec(x)+2=0 | | -8x+9*0=-72 | | 5x^2-12x-3=0 | | 8.2+8.5x-x=x-x+94.5 | | -2=7x-9 | | -8*0+9y=-72 | | 4.3+6.7x-x=x-x+41.4 | | 0.02(x-3.72)=1.18 | | 7x-6y=30 | | 7(y-x)=(3x+2)(x-y) | | y=4mx-9b | | 2x-5*-10=-10 | | 3x^2+6x+19=7 | | 11x+11y=-33 | | 2x-5*2=-10 | | ln(x)+ln(x+1)=ln(30) | | 6=10B+12C | | z-6.5z+0.5=-5(z-1.2) | | 6+4(7+5m)= | | -7=-7/3x-7 | | 15y-30=60 | | x*x-8x=48 | | -9(x+2)+4x+7=7x+12 | | 5-2(-4n+7)=-7(-5n+5)+7 | | x*.15=32.30 | | 2=-7/3x-7 | | y=25000-400(25) | | 5(x-5)=2x | | 3x+(x+8)=2x-(-6) | | -80-9v=11v+100 |

Equations solver categories