14x^2-2x-8=13-3x

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Solution for 14x^2-2x-8=13-3x equation:


Simplifying
14x2 + -2x + -8 = 13 + -3x

Reorder the terms:
-8 + -2x + 14x2 = 13 + -3x

Solving
-8 + -2x + 14x2 = 13 + -3x

Solving for variable 'x'.

Reorder the terms:
-8 + -13 + -2x + 3x + 14x2 = 13 + -3x + -13 + 3x

Combine like terms: -8 + -13 = -21
-21 + -2x + 3x + 14x2 = 13 + -3x + -13 + 3x

Combine like terms: -2x + 3x = 1x
-21 + 1x + 14x2 = 13 + -3x + -13 + 3x

Reorder the terms:
-21 + 1x + 14x2 = 13 + -13 + -3x + 3x

Combine like terms: 13 + -13 = 0
-21 + 1x + 14x2 = 0 + -3x + 3x
-21 + 1x + 14x2 = -3x + 3x

Combine like terms: -3x + 3x = 0
-21 + 1x + 14x2 = 0

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

Divide each side by '14'.
-1.5 + 0.07142857143x + x2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + 0.07142857143x + 1.5 + x2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + 0.07142857143x + x2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + 0.07142857143x + x2 = 0 + 1.5
0.07142857143x + x2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
0.07142857143x + x2 = 1.5

The x term is 0.07142857143x.  Take half its coefficient (0.03571428572).
Square it (0.001275510204) and add it to both sides.

Add '0.001275510204' to each side of the equation.
0.07142857143x + 0.001275510204 + x2 = 1.5 + 0.001275510204

Reorder the terms:
0.001275510204 + 0.07142857143x + x2 = 1.5 + 0.001275510204

Combine like terms: 1.5 + 0.001275510204 = 1.501275510204
0.001275510204 + 0.07142857143x + x2 = 1.501275510204

Factor a perfect square on the left side:
(x + 0.03571428572)(x + 0.03571428572) = 1.501275510204

Calculate the square root of the right side: 1.225265486

Break this problem into two subproblems by setting 
(x + 0.03571428572) equal to 1.225265486 and -1.225265486.

Subproblem 1

x + 0.03571428572 = 1.225265486 Simplifying x + 0.03571428572 = 1.225265486 Reorder the terms: 0.03571428572 + x = 1.225265486 Solving 0.03571428572 + x = 1.225265486 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.03571428572' to each side of the equation. 0.03571428572 + -0.03571428572 + x = 1.225265486 + -0.03571428572 Combine like terms: 0.03571428572 + -0.03571428572 = 0.00000000000 0.00000000000 + x = 1.225265486 + -0.03571428572 x = 1.225265486 + -0.03571428572 Combine like terms: 1.225265486 + -0.03571428572 = 1.18955120028 x = 1.18955120028 Simplifying x = 1.18955120028

Subproblem 2

x + 0.03571428572 = -1.225265486 Simplifying x + 0.03571428572 = -1.225265486 Reorder the terms: 0.03571428572 + x = -1.225265486 Solving 0.03571428572 + x = -1.225265486 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.03571428572' to each side of the equation. 0.03571428572 + -0.03571428572 + x = -1.225265486 + -0.03571428572 Combine like terms: 0.03571428572 + -0.03571428572 = 0.00000000000 0.00000000000 + x = -1.225265486 + -0.03571428572 x = -1.225265486 + -0.03571428572 Combine like terms: -1.225265486 + -0.03571428572 = -1.26097977172 x = -1.26097977172 Simplifying x = -1.26097977172

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.18955120028, -1.26097977172}

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