2x^2+30x+6=-2x^2+4x+3

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Solution for 2x^2+30x+6=-2x^2+4x+3 equation:


Simplifying
2x2 + 30x + 6 = -2x2 + 4x + 3

Reorder the terms:
6 + 30x + 2x2 = -2x2 + 4x + 3

Reorder the terms:
6 + 30x + 2x2 = 3 + 4x + -2x2

Solving
6 + 30x + 2x2 = 3 + 4x + -2x2

Solving for variable 'x'.

Reorder the terms:
6 + -3 + 30x + -4x + 2x2 + 2x2 = 3 + 4x + -2x2 + -3 + -4x + 2x2

Combine like terms: 6 + -3 = 3
3 + 30x + -4x + 2x2 + 2x2 = 3 + 4x + -2x2 + -3 + -4x + 2x2

Combine like terms: 30x + -4x = 26x
3 + 26x + 2x2 + 2x2 = 3 + 4x + -2x2 + -3 + -4x + 2x2

Combine like terms: 2x2 + 2x2 = 4x2
3 + 26x + 4x2 = 3 + 4x + -2x2 + -3 + -4x + 2x2

Reorder the terms:
3 + 26x + 4x2 = 3 + -3 + 4x + -4x + -2x2 + 2x2

Combine like terms: 3 + -3 = 0
3 + 26x + 4x2 = 0 + 4x + -4x + -2x2 + 2x2
3 + 26x + 4x2 = 4x + -4x + -2x2 + 2x2

Combine like terms: 4x + -4x = 0
3 + 26x + 4x2 = 0 + -2x2 + 2x2
3 + 26x + 4x2 = -2x2 + 2x2

Combine like terms: -2x2 + 2x2 = 0
3 + 26x + 4x2 = 0

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

Divide each side by '4'.
0.75 + 6.5x + x2 = 0

Move the constant term to the right:

Add '-0.75' to each side of the equation.
0.75 + 6.5x + -0.75 + x2 = 0 + -0.75

Reorder the terms:
0.75 + -0.75 + 6.5x + x2 = 0 + -0.75

Combine like terms: 0.75 + -0.75 = 0.00
0.00 + 6.5x + x2 = 0 + -0.75
6.5x + x2 = 0 + -0.75

Combine like terms: 0 + -0.75 = -0.75
6.5x + x2 = -0.75

The x term is 6.5x.  Take half its coefficient (3.25).
Square it (10.5625) and add it to both sides.

Add '10.5625' to each side of the equation.
6.5x + 10.5625 + x2 = -0.75 + 10.5625

Reorder the terms:
10.5625 + 6.5x + x2 = -0.75 + 10.5625

Combine like terms: -0.75 + 10.5625 = 9.8125
10.5625 + 6.5x + x2 = 9.8125

Factor a perfect square on the left side:
(x + 3.25)(x + 3.25) = 9.8125

Calculate the square root of the right side: 3.132491022

Break this problem into two subproblems by setting 
(x + 3.25) equal to 3.132491022 and -3.132491022.

Subproblem 1

x + 3.25 = 3.132491022 Simplifying x + 3.25 = 3.132491022 Reorder the terms: 3.25 + x = 3.132491022 Solving 3.25 + x = 3.132491022 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.25' to each side of the equation. 3.25 + -3.25 + x = 3.132491022 + -3.25 Combine like terms: 3.25 + -3.25 = 0.00 0.00 + x = 3.132491022 + -3.25 x = 3.132491022 + -3.25 Combine like terms: 3.132491022 + -3.25 = -0.117508978 x = -0.117508978 Simplifying x = -0.117508978

Subproblem 2

x + 3.25 = -3.132491022 Simplifying x + 3.25 = -3.132491022 Reorder the terms: 3.25 + x = -3.132491022 Solving 3.25 + x = -3.132491022 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.25' to each side of the equation. 3.25 + -3.25 + x = -3.132491022 + -3.25 Combine like terms: 3.25 + -3.25 = 0.00 0.00 + x = -3.132491022 + -3.25 x = -3.132491022 + -3.25 Combine like terms: -3.132491022 + -3.25 = -6.382491022 x = -6.382491022 Simplifying x = -6.382491022

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.117508978, -6.382491022}

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