-6x^2=1-x

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Solution for -6x^2=1-x equation:


Simplifying
-6x2 = 1 + -1x

Solving
-6x2 = 1 + -1x

Solving for variable 'x'.

Reorder the terms:
-1 + x + -6x2 = 1 + -1x + -1 + x

Reorder the terms:
-1 + x + -6x2 = 1 + -1 + -1x + x

Combine like terms: 1 + -1 = 0
-1 + x + -6x2 = 0 + -1x + x
-1 + x + -6x2 = -1x + x

Combine like terms: -1x + x = 0
-1 + x + -6x2 = 0

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

Divide each side by '-6'.
0.1666666667 + -0.1666666667x + x2 = 0

Move the constant term to the right:

Add '-0.1666666667' to each side of the equation.
0.1666666667 + -0.1666666667x + -0.1666666667 + x2 = 0 + -0.1666666667

Reorder the terms:
0.1666666667 + -0.1666666667 + -0.1666666667x + x2 = 0 + -0.1666666667

Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000
0.0000000000 + -0.1666666667x + x2 = 0 + -0.1666666667
-0.1666666667x + x2 = 0 + -0.1666666667

Combine like terms: 0 + -0.1666666667 = -0.1666666667
-0.1666666667x + x2 = -0.1666666667

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.
-0.1666666667x + 0.25 + x2 = -0.1666666667 + 0.25

Reorder the terms:
0.25 + -0.1666666667x + x2 = -0.1666666667 + 0.25

Combine like terms: -0.1666666667 + 0.25 = 0.0833333333
0.25 + -0.1666666667x + x2 = 0.0833333333

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 0.0833333333

Calculate the square root of the right side: 0.288675135

Break this problem into two subproblems by setting 
(x + 0.5) equal to 0.288675135 and -0.288675135.

Subproblem 1

x + 0.5 = 0.288675135 Simplifying x + 0.5 = 0.288675135 Reorder the terms: 0.5 + x = 0.288675135 Solving 0.5 + x = 0.288675135 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 = 0.288675135 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 0.288675135 + -0.5 x = 0.288675135 + -0.5 Combine like terms: 0.288675135 + -0.5 = -0.211324865 x = -0.211324865 Simplifying x = -0.211324865

Subproblem 2

x + 0.5 = -0.288675135 Simplifying x + 0.5 = -0.288675135 Reorder the terms: 0.5 + x = -0.288675135 Solving 0.5 + x = -0.288675135 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 = -0.288675135 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -0.288675135 + -0.5 x = -0.288675135 + -0.5 Combine like terms: -0.288675135 + -0.5 = -0.788675135 x = -0.788675135 Simplifying x = -0.788675135

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.211324865, -0.788675135}

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