(5)3x^2+2x+3=6(5)

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Solution for (5)3x^2+2x+3=6(5) equation:


Simplifying
(5) * 3x2 + 2x + 3 = 6(5)

Multiply 5 * 3
15x2 + 2x + 3 = 6(5)

Reorder the terms:
3 + 2x + 15x2 = 6(5)

Multiply 6 * 5
3 + 2x + 15x2 = 30

Solving
3 + 2x + 15x2 = 30

Solving for variable 'x'.

Reorder the terms:
3 + -30 + 2x + 15x2 = 30 + -30

Combine like terms: 3 + -30 = -27
-27 + 2x + 15x2 = 30 + -30

Combine like terms: 30 + -30 = 0
-27 + 2x + 15x2 = 0

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

Divide each side by '15'.
-1.8 + 0.1333333333x + x2 = 0

Move the constant term to the right:

Add '1.8' to each side of the equation.
-1.8 + 0.1333333333x + 1.8 + x2 = 0 + 1.8

Reorder the terms:
-1.8 + 1.8 + 0.1333333333x + x2 = 0 + 1.8

Combine like terms: -1.8 + 1.8 = 0.0
0.0 + 0.1333333333x + x2 = 0 + 1.8
0.1333333333x + x2 = 0 + 1.8

Combine like terms: 0 + 1.8 = 1.8
0.1333333333x + x2 = 1.8

The x term is 0.1333333333x.  Take half its coefficient (0.06666666665).
Square it (0.004444444442) and add it to both sides.

Add '0.004444444442' to each side of the equation.
0.1333333333x + 0.004444444442 + x2 = 1.8 + 0.004444444442

Reorder the terms:
0.004444444442 + 0.1333333333x + x2 = 1.8 + 0.004444444442

Combine like terms: 1.8 + 0.004444444442 = 1.804444444442
0.004444444442 + 0.1333333333x + x2 = 1.804444444442

Factor a perfect square on the left side:
(x + 0.06666666665)(x + 0.06666666665) = 1.804444444442

Calculate the square root of the right side: 1.343296112

Break this problem into two subproblems by setting 
(x + 0.06666666665) equal to 1.343296112 and -1.343296112.

Subproblem 1

x + 0.06666666665 = 1.343296112 Simplifying x + 0.06666666665 = 1.343296112 Reorder the terms: 0.06666666665 + x = 1.343296112 Solving 0.06666666665 + x = 1.343296112 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.06666666665' to each side of the equation. 0.06666666665 + -0.06666666665 + x = 1.343296112 + -0.06666666665 Combine like terms: 0.06666666665 + -0.06666666665 = 0.00000000000 0.00000000000 + x = 1.343296112 + -0.06666666665 x = 1.343296112 + -0.06666666665 Combine like terms: 1.343296112 + -0.06666666665 = 1.27662944535 x = 1.27662944535 Simplifying x = 1.27662944535

Subproblem 2

x + 0.06666666665 = -1.343296112 Simplifying x + 0.06666666665 = -1.343296112 Reorder the terms: 0.06666666665 + x = -1.343296112 Solving 0.06666666665 + x = -1.343296112 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.06666666665' to each side of the equation. 0.06666666665 + -0.06666666665 + x = -1.343296112 + -0.06666666665 Combine like terms: 0.06666666665 + -0.06666666665 = 0.00000000000 0.00000000000 + x = -1.343296112 + -0.06666666665 x = -1.343296112 + -0.06666666665 Combine like terms: -1.343296112 + -0.06666666665 = -1.40996277865 x = -1.40996277865 Simplifying x = -1.40996277865

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.27662944535, -1.40996277865}

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