3x^2-6x+2-4x-12x^2=

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Solution for 3x^2-6x+2-4x-12x^2= equation:


Simplifying
3x2 + -6x + 2 + -4x + -12x2 = 0

Reorder the terms:
2 + -6x + -4x + 3x2 + -12x2 = 0

Combine like terms: -6x + -4x = -10x
2 + -10x + 3x2 + -12x2 = 0

Combine like terms: 3x2 + -12x2 = -9x2
2 + -10x + -9x2 = 0

Solving
2 + -10x + -9x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-9 the coefficient of the squared term: 

Divide each side by '-9'.
-0.2222222222 + 1.111111111x + x2 = 0

Move the constant term to the right:

Add '0.2222222222' to each side of the equation.
-0.2222222222 + 1.111111111x + 0.2222222222 + x2 = 0 + 0.2222222222

Reorder the terms:
-0.2222222222 + 0.2222222222 + 1.111111111x + x2 = 0 + 0.2222222222

Combine like terms: -0.2222222222 + 0.2222222222 = 0.0000000000
0.0000000000 + 1.111111111x + x2 = 0 + 0.2222222222
1.111111111x + x2 = 0 + 0.2222222222

Combine like terms: 0 + 0.2222222222 = 0.2222222222
1.111111111x + x2 = 0.2222222222

The x term is 1.111111111x.  Take half its coefficient (0.5555555555).
Square it (0.3086419752) and add it to both sides.

Add '0.3086419752' to each side of the equation.
1.111111111x + 0.3086419752 + x2 = 0.2222222222 + 0.3086419752

Reorder the terms:
0.3086419752 + 1.111111111x + x2 = 0.2222222222 + 0.3086419752

Combine like terms: 0.2222222222 + 0.3086419752 = 0.5308641974
0.3086419752 + 1.111111111x + x2 = 0.5308641974

Factor a perfect square on the left side:
(x + 0.5555555555)(x + 0.5555555555) = 0.5308641974

Calculate the square root of the right side: 0.72860428

Break this problem into two subproblems by setting 
(x + 0.5555555555) equal to 0.72860428 and -0.72860428.

Subproblem 1

x + 0.5555555555 = 0.72860428 Simplifying x + 0.5555555555 = 0.72860428 Reorder the terms: 0.5555555555 + x = 0.72860428 Solving 0.5555555555 + x = 0.72860428 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5555555555' to each side of the equation. 0.5555555555 + -0.5555555555 + x = 0.72860428 + -0.5555555555 Combine like terms: 0.5555555555 + -0.5555555555 = 0.0000000000 0.0000000000 + x = 0.72860428 + -0.5555555555 x = 0.72860428 + -0.5555555555 Combine like terms: 0.72860428 + -0.5555555555 = 0.1730487245 x = 0.1730487245 Simplifying x = 0.1730487245

Subproblem 2

x + 0.5555555555 = -0.72860428 Simplifying x + 0.5555555555 = -0.72860428 Reorder the terms: 0.5555555555 + x = -0.72860428 Solving 0.5555555555 + x = -0.72860428 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5555555555' to each side of the equation. 0.5555555555 + -0.5555555555 + x = -0.72860428 + -0.5555555555 Combine like terms: 0.5555555555 + -0.5555555555 = 0.0000000000 0.0000000000 + x = -0.72860428 + -0.5555555555 x = -0.72860428 + -0.5555555555 Combine like terms: -0.72860428 + -0.5555555555 = -1.2841598355 x = -1.2841598355 Simplifying x = -1.2841598355

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.1730487245, -1.2841598355}

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