6x^2+2x-80=0

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Solution for 6x^2+2x-80=0 equation: 


Simplifying
6x2 + 2x + -80 = 0

Reorder the terms:
-80 + 2x + 6x2 = 0

Solving
-80 + 2x + 6x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-40 + x + 3x2) = 0

Ignore the factor 2.

Subproblem 1
Set the factor '(-40 + x + 3x2)' equal to zero and attempt to solve:

Simplifying
-40 + x + 3x2 = 0

Solving
-40 + x + 3x2 = 0

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

Divide each side by '3'.
-13.33333333 + 0.3333333333x + x2 = 0

Move the constant term to the right:

Add '13.33333333' to each side of the equation.
-13.33333333 + 0.3333333333x + 13.33333333 + x2 = 0 + 13.33333333

Reorder the terms:
-13.33333333 + 13.33333333 + 0.3333333333x + x2 = 0 + 13.33333333

Combine like terms: -13.33333333 + 13.33333333 = 0.00000000
0.00000000 + 0.3333333333x + x2 = 0 + 13.33333333
0.3333333333x + x2 = 0 + 13.33333333

Combine like terms: 0 + 13.33333333 = 13.33333333
0.3333333333x + x2 = 13.33333333

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.
0.3333333333x + 0.25 + x2 = 13.33333333 + 0.25

Reorder the terms:
0.25 + 0.3333333333x + x2 = 13.33333333 + 0.25

Combine like terms: 13.33333333 + 0.25 = 13.58333333
0.25 + 0.3333333333x + x2 = 13.58333333

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 13.58333333

Calculate the square root of the right side: 3.685557397

Break this problem into two subproblems by setting 
(x + 0.5) equal to 3.685557397 and -3.685557397.


Subproblem 1
x + 0.5 = 3.685557397

Simplifying
x + 0.5 = 3.685557397

Reorder the terms:
0.5 + x = 3.685557397

Solving
0.5 + x = 3.685557397

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 = 3.685557397 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + x = 3.685557397 + -0.5
x = 3.685557397 + -0.5

Combine like terms: 3.685557397 + -0.5 = 3.185557397
x = 3.185557397

Simplifying
x = 3.185557397


Subproblem 2
x + 0.5 = -3.685557397

Simplifying
x + 0.5 = -3.685557397

Reorder the terms:
0.5 + x = -3.685557397

Solving
0.5 + x = -3.685557397

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 = -3.685557397 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + x = -3.685557397 + -0.5
x = -3.685557397 + -0.5

Combine like terms: -3.685557397 + -0.5 = -4.185557397
x = -4.185557397

Simplifying
x = -4.185557397


Solution
The solution to the problem is based on the solutions
from the subproblems.
x = {3.185557397, -4.185557397}
Solution
x = {3.185557397, -4.185557397}

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