6x^2-12x-11=0

Simple and best practice solution for 6x^2-12x-11=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 6x^2-12x-11=0 equation:


Simplifying
6x2 + -12x + -11 = 0

Reorder the terms:
-11 + -12x + 6x2 = 0

Solving
-11 + -12x + 6x2 = 0

Solving for variable 'x'.

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

Divide each side by '6'.
-1.833333333 + -2x + x2 = 0

Move the constant term to the right:

Add '1.833333333' to each side of the equation.
-1.833333333 + -2x + 1.833333333 + x2 = 0 + 1.833333333

Reorder the terms:
-1.833333333 + 1.833333333 + -2x + x2 = 0 + 1.833333333

Combine like terms: -1.833333333 + 1.833333333 = 0.000000000
0.000000000 + -2x + x2 = 0 + 1.833333333
-2x + x2 = 0 + 1.833333333

Combine like terms: 0 + 1.833333333 = 1.833333333
-2x + x2 = 1.833333333

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 = 1.833333333 + 1

Reorder the terms:
1 + -2x + x2 = 1.833333333 + 1

Combine like terms: 1.833333333 + 1 = 2.833333333
1 + -2x + x2 = 2.833333333

Factor a perfect square on the left side:
(x + -1)(x + -1) = 2.833333333

Calculate the square root of the right side: 1.683250823

Break this problem into two subproblems by setting 
(x + -1) equal to 1.683250823 and -1.683250823.

Subproblem 1

x + -1 = 1.683250823 Simplifying x + -1 = 1.683250823 Reorder the terms: -1 + x = 1.683250823 Solving -1 + x = 1.683250823 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 1.683250823 + 1 Combine like terms: -1 + 1 = 0 0 + x = 1.683250823 + 1 x = 1.683250823 + 1 Combine like terms: 1.683250823 + 1 = 2.683250823 x = 2.683250823 Simplifying x = 2.683250823

Subproblem 2

x + -1 = -1.683250823 Simplifying x + -1 = -1.683250823 Reorder the terms: -1 + x = -1.683250823 Solving -1 + x = -1.683250823 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -1.683250823 + 1 Combine like terms: -1 + 1 = 0 0 + x = -1.683250823 + 1 x = -1.683250823 + 1 Combine like terms: -1.683250823 + 1 = -0.683250823 x = -0.683250823 Simplifying x = -0.683250823

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.683250823, -0.683250823}

See similar equations:

| (x+7)(3x+4)=-14 | | 5-3x=12-6x | | 7x+1=(4x+4) | | 14-9y=-13 | | 2/7k-1/14=-3 | | 459=16x+7 | | 3x(3x+2)=35 | | m-61/4=93/8 | | u^2-9/169 | | -3/7p=36 | | y-4=5/4(x+8) | | 11.3=452 | | 15=9h | | 3m=-45 | | x(20x+21)=54 | | X^2+6x+8=99 | | 3(2x+3)=5/2+2(x+1) | | 2k+3k=120 | | x^2+3y^2+4x+6y+7=0 | | -1/6m-5/8+3/4m=7/4 | | -7/3h=35 | | -1/6m-5/8+3/4m=13/4 | | 5n+7=5+3n | | y-4=5/4(x-1(-8)) | | (3x2-2x-7)/(x+2) | | 15+3x=2x+18 | | 4y-7=2y+6 | | (3y-4)^2/(4-3y)^2 | | 7(3f-4)=10(2f-5) | | .5x+15=37 | | 4/5=7/9m | | -0.9= |

Equations solver categories