6x^2+6x-11=0

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


Simplifying
6x2 + 6x + -11 = 0

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

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

Move the constant term to the right:

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

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

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

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

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x2 = 1.833333333 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 1.833333333 + 0.25

Combine like terms: 1.833333333 + 0.25 = 2.083333333
1.25 + x2 = 2.083333333

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 2.083333333

Calculate the square root of the right side: 1.443375673

Break this problem into two subproblems by setting 
(x + 0.5) equal to 1.443375673 and -1.443375673.

Subproblem 1

x + 0.5 = 1.443375673 Simplifying x + 0.5 = 1.443375673 Reorder the terms: 0.5 + x = 1.443375673 Solving 0.5 + x = 1.443375673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 1.443375673 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.443375673 + -0.5 x = 1.443375673 + -0.5 Combine like terms: 1.443375673 + -0.5 = 0.943375673 x = 0.943375673 Simplifying x = 0.943375673

Subproblem 2

x + 0.5 = -1.443375673 Simplifying x + 0.5 = -1.443375673 Reorder the terms: 0.5 + x = -1.443375673 Solving 0.5 + x = -1.443375673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -1.443375673 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.443375673 + -0.5 x = -1.443375673 + -0.5 Combine like terms: -1.443375673 + -0.5 = -1.943375673 x = -1.943375673 Simplifying x = -1.943375673

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.943375673, -1.943375673}

See similar equations:

| 3y=-24 | | e+3456=+23 | | -6(t-6)-(t+5)=1 | | 2t^2+t-3=0 | | 72=r(18) | | -6x-3y+z=-62 | | 6x+4y-3z=67 | | -5y+2x+16=0 | | 3x-7-7z=7 | | 103-5x=31x+23 | | 1.6=-98.70+0.05x | | 2.1a+7.5y-6.7a+9.6y= | | 2.7x=8 | | 6x+39+9x=15(x+4)-25 | | x(4x-7)(x+5)= | | x-6=6x+4 | | x+0.50+0.75=18 | | x(3x-4)(x+8)= | | 16p+19+20p+43= | | r=x+2 | | 7x(3-2)=45 | | (9x+5)*(3x^2+4x+4)= | | 0.21x=63 | | 8x^2-16x+5x-10=0 | | 10x-3(x-6)=30 | | x=7+8 | | b^2-11b=-28 | | 11-6y=-1 | | 3402000=3900x+10x^2 | | -4x=13 | | 35*6.86= | | 17x-8x-9=75-40 |

Equations solver categories