0=3x^2-8x-6

Simple and best practice solution for 0=3x^2-8x-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 0=3x^2-8x-6 equation:


Simplifying
0 = 3x2 + -8x + -6

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

Solving
0 = -6 + -8x + 3x2

Solving for variable 'x'.

Combine like terms: 0 + 6 = 6
6 + 8x + -3x2 = -6 + -8x + 3x2 + 6 + 8x + -3x2

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

Combine like terms: -6 + 6 = 0
6 + 8x + -3x2 = 0 + -8x + 8x + 3x2 + -3x2
6 + 8x + -3x2 = -8x + 8x + 3x2 + -3x2

Combine like terms: -8x + 8x = 0
6 + 8x + -3x2 = 0 + 3x2 + -3x2
6 + 8x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
6 + 8x + -3x2 = 0

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

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

Move the constant term to the right:

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

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

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

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

The x term is -2.666666667x.  Take half its coefficient (-1.333333334).
Square it (1.777777780) and add it to both sides.

Add '1.777777780' to each side of the equation.
-2.666666667x + 1.777777780 + x2 = 2 + 1.777777780

Reorder the terms:
1.777777780 + -2.666666667x + x2 = 2 + 1.777777780

Combine like terms: 2 + 1.777777780 = 3.77777778
1.777777780 + -2.666666667x + x2 = 3.77777778

Factor a perfect square on the left side:
(x + -1.333333334)(x + -1.333333334) = 3.77777778

Calculate the square root of the right side: 1.943650632

Break this problem into two subproblems by setting 
(x + -1.333333334) equal to 1.943650632 and -1.943650632.

Subproblem 1

x + -1.333333334 = 1.943650632 Simplifying x + -1.333333334 = 1.943650632 Reorder the terms: -1.333333334 + x = 1.943650632 Solving -1.333333334 + x = 1.943650632 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.333333334' to each side of the equation. -1.333333334 + 1.333333334 + x = 1.943650632 + 1.333333334 Combine like terms: -1.333333334 + 1.333333334 = 0.000000000 0.000000000 + x = 1.943650632 + 1.333333334 x = 1.943650632 + 1.333333334 Combine like terms: 1.943650632 + 1.333333334 = 3.276983966 x = 3.276983966 Simplifying x = 3.276983966

Subproblem 2

x + -1.333333334 = -1.943650632 Simplifying x + -1.333333334 = -1.943650632 Reorder the terms: -1.333333334 + x = -1.943650632 Solving -1.333333334 + x = -1.943650632 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.333333334' to each side of the equation. -1.333333334 + 1.333333334 + x = -1.943650632 + 1.333333334 Combine like terms: -1.333333334 + 1.333333334 = 0.000000000 0.000000000 + x = -1.943650632 + 1.333333334 x = -1.943650632 + 1.333333334 Combine like terms: -1.943650632 + 1.333333334 = -0.610317298 x = -0.610317298 Simplifying x = -0.610317298

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.276983966, -0.610317298}

See similar equations:

| 2x-2x-2=7x | | 32=4(1-3a)+8a | | -18=7y | | -6n+3+2n=15 | | e^2-4x=3 | | 4=-8-3m | | -18=7 | | 5x-6=2x+1 | | t+3.9=18.7 | | .4x=125 | | 2d=11 | | -18=-3x+4y | | 2*3-4x*3=-2(1-x)*3 | | 2d+3d+1= | | 2-4x=-2(1-x) | | (6*x*y+3*x^2)dx+(6*x^2*y+4*y^3)dy=0 | | 1-2x+4x=7x+7x | | 9-(2y-3)=4 | | 2d+3d+1=6 | | 2xy^2+4wd=56 | | 82x=8.5x-3 | | 16x^2+22x-108=0 | | 3x=-4x-9 | | 30x=12x-30 | | 2(y+2)+5y=25 | | 23X=9X-13 | | fd-7=0 | | 0=4x^2-1x-3 | | -27=5(v-6)-8v | | 2x^2+34x+336=0 | | 2x^2+34+336=0 | | 14x=-3x+8 |

Equations solver categories