2x^2+114=4x^2+13x

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Solution for 2x^2+114=4x^2+13x equation:


Simplifying
2x2 + 114 = 4x2 + 13x

Reorder the terms:
114 + 2x2 = 4x2 + 13x

Reorder the terms:
114 + 2x2 = 13x + 4x2

Solving
114 + 2x2 = 13x + 4x2

Solving for variable 'x'.

Reorder the terms:
114 + -13x + 2x2 + -4x2 = 13x + 4x2 + -13x + -4x2

Combine like terms: 2x2 + -4x2 = -2x2
114 + -13x + -2x2 = 13x + 4x2 + -13x + -4x2

Reorder the terms:
114 + -13x + -2x2 = 13x + -13x + 4x2 + -4x2

Combine like terms: 13x + -13x = 0
114 + -13x + -2x2 = 0 + 4x2 + -4x2
114 + -13x + -2x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
114 + -13x + -2x2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
-57 + 6.5x + x2 = 0

Move the constant term to the right:

Add '57' to each side of the equation.
-57 + 6.5x + 57 + x2 = 0 + 57

Reorder the terms:
-57 + 57 + 6.5x + x2 = 0 + 57

Combine like terms: -57 + 57 = 0
0 + 6.5x + x2 = 0 + 57
6.5x + x2 = 0 + 57

Combine like terms: 0 + 57 = 57
6.5x + x2 = 57

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 = 57 + 10.5625

Reorder the terms:
10.5625 + 6.5x + x2 = 57 + 10.5625

Combine like terms: 57 + 10.5625 = 67.5625
10.5625 + 6.5x + x2 = 67.5625

Factor a perfect square on the left side:
(x + 3.25)(x + 3.25) = 67.5625

Calculate the square root of the right side: 8.219641111

Break this problem into two subproblems by setting 
(x + 3.25) equal to 8.219641111 and -8.219641111.

Subproblem 1

x + 3.25 = 8.219641111 Simplifying x + 3.25 = 8.219641111 Reorder the terms: 3.25 + x = 8.219641111 Solving 3.25 + x = 8.219641111 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 = 8.219641111 + -3.25 Combine like terms: 3.25 + -3.25 = 0.00 0.00 + x = 8.219641111 + -3.25 x = 8.219641111 + -3.25 Combine like terms: 8.219641111 + -3.25 = 4.969641111 x = 4.969641111 Simplifying x = 4.969641111

Subproblem 2

x + 3.25 = -8.219641111 Simplifying x + 3.25 = -8.219641111 Reorder the terms: 3.25 + x = -8.219641111 Solving 3.25 + x = -8.219641111 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 = -8.219641111 + -3.25 Combine like terms: 3.25 + -3.25 = 0.00 0.00 + x = -8.219641111 + -3.25 x = -8.219641111 + -3.25 Combine like terms: -8.219641111 + -3.25 = -11.469641111 x = -11.469641111 Simplifying x = -11.469641111

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.969641111, -11.469641111}

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