6x^2-12x-89=0

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Solution for 6x^2-12x-89=0 equation:


Simplifying
6x2 + -12x + -89 = 0

Reorder the terms:
-89 + -12x + 6x2 = 0

Solving
-89 + -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'.
-14.83333333 + -2x + x2 = 0

Move the constant term to the right:

Add '14.83333333' to each side of the equation.
-14.83333333 + -2x + 14.83333333 + x2 = 0 + 14.83333333

Reorder the terms:
-14.83333333 + 14.83333333 + -2x + x2 = 0 + 14.83333333

Combine like terms: -14.83333333 + 14.83333333 = 0.00000000
0.00000000 + -2x + x2 = 0 + 14.83333333
-2x + x2 = 0 + 14.83333333

Combine like terms: 0 + 14.83333333 = 14.83333333
-2x + x2 = 14.83333333

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 = 14.83333333 + 1

Reorder the terms:
1 + -2x + x2 = 14.83333333 + 1

Combine like terms: 14.83333333 + 1 = 15.83333333
1 + -2x + x2 = 15.83333333

Factor a perfect square on the left side:
(x + -1)(x + -1) = 15.83333333

Calculate the square root of the right side: 3.979112128

Break this problem into two subproblems by setting 
(x + -1) equal to 3.979112128 and -3.979112128.

Subproblem 1

x + -1 = 3.979112128 Simplifying x + -1 = 3.979112128 Reorder the terms: -1 + x = 3.979112128 Solving -1 + x = 3.979112128 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 = 3.979112128 + 1 Combine like terms: -1 + 1 = 0 0 + x = 3.979112128 + 1 x = 3.979112128 + 1 Combine like terms: 3.979112128 + 1 = 4.979112128 x = 4.979112128 Simplifying x = 4.979112128

Subproblem 2

x + -1 = -3.979112128 Simplifying x + -1 = -3.979112128 Reorder the terms: -1 + x = -3.979112128 Solving -1 + x = -3.979112128 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 = -3.979112128 + 1 Combine like terms: -1 + 1 = 0 0 + x = -3.979112128 + 1 x = -3.979112128 + 1 Combine like terms: -3.979112128 + 1 = -2.979112128 x = -2.979112128 Simplifying x = -2.979112128

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.979112128, -2.979112128}

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