3x^2-12x+14=2x+4

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Solution for 3x^2-12x+14=2x+4 equation:


Simplifying
3x2 + -12x + 14 = 2x + 4

Reorder the terms:
14 + -12x + 3x2 = 2x + 4

Reorder the terms:
14 + -12x + 3x2 = 4 + 2x

Solving
14 + -12x + 3x2 = 4 + 2x

Solving for variable 'x'.

Reorder the terms:
14 + -4 + -12x + -2x + 3x2 = 4 + 2x + -4 + -2x

Combine like terms: 14 + -4 = 10
10 + -12x + -2x + 3x2 = 4 + 2x + -4 + -2x

Combine like terms: -12x + -2x = -14x
10 + -14x + 3x2 = 4 + 2x + -4 + -2x

Reorder the terms:
10 + -14x + 3x2 = 4 + -4 + 2x + -2x

Combine like terms: 4 + -4 = 0
10 + -14x + 3x2 = 0 + 2x + -2x
10 + -14x + 3x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
10 + -14x + 3x2 = 0

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

Divide each side by '3'.
3.333333333 + -4.666666667x + x2 = 0

Move the constant term to the right:

Add '-3.333333333' to each side of the equation.
3.333333333 + -4.666666667x + -3.333333333 + x2 = 0 + -3.333333333

Reorder the terms:
3.333333333 + -3.333333333 + -4.666666667x + x2 = 0 + -3.333333333

Combine like terms: 3.333333333 + -3.333333333 = 0.000000000
0.000000000 + -4.666666667x + x2 = 0 + -3.333333333
-4.666666667x + x2 = 0 + -3.333333333

Combine like terms: 0 + -3.333333333 = -3.333333333
-4.666666667x + x2 = -3.333333333

The x term is -4.666666667x.  Take half its coefficient (-2.333333334).
Square it (5.444444448) and add it to both sides.

Add '5.444444448' to each side of the equation.
-4.666666667x + 5.444444448 + x2 = -3.333333333 + 5.444444448

Reorder the terms:
5.444444448 + -4.666666667x + x2 = -3.333333333 + 5.444444448

Combine like terms: -3.333333333 + 5.444444448 = 2.111111115
5.444444448 + -4.666666667x + x2 = 2.111111115

Factor a perfect square on the left side:
(x + -2.333333334)(x + -2.333333334) = 2.111111115

Calculate the square root of the right side: 1.452966316

Break this problem into two subproblems by setting 
(x + -2.333333334) equal to 1.452966316 and -1.452966316.

Subproblem 1

x + -2.333333334 = 1.452966316 Simplifying x + -2.333333334 = 1.452966316 Reorder the terms: -2.333333334 + x = 1.452966316 Solving -2.333333334 + x = 1.452966316 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.333333334' to each side of the equation. -2.333333334 + 2.333333334 + x = 1.452966316 + 2.333333334 Combine like terms: -2.333333334 + 2.333333334 = 0.000000000 0.000000000 + x = 1.452966316 + 2.333333334 x = 1.452966316 + 2.333333334 Combine like terms: 1.452966316 + 2.333333334 = 3.78629965 x = 3.78629965 Simplifying x = 3.78629965

Subproblem 2

x + -2.333333334 = -1.452966316 Simplifying x + -2.333333334 = -1.452966316 Reorder the terms: -2.333333334 + x = -1.452966316 Solving -2.333333334 + x = -1.452966316 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.333333334' to each side of the equation. -2.333333334 + 2.333333334 + x = -1.452966316 + 2.333333334 Combine like terms: -2.333333334 + 2.333333334 = 0.000000000 0.000000000 + x = -1.452966316 + 2.333333334 x = -1.452966316 + 2.333333334 Combine like terms: -1.452966316 + 2.333333334 = 0.880367018 x = 0.880367018 Simplifying x = 0.880367018

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.78629965, 0.880367018}

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