-5x^2+3=14x^2-8x

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Solution for -5x^2+3=14x^2-8x equation:


Simplifying
-5x2 + 3 = 14x2 + -8x

Reorder the terms:
3 + -5x2 = 14x2 + -8x

Reorder the terms:
3 + -5x2 = -8x + 14x2

Solving
3 + -5x2 = -8x + 14x2

Solving for variable 'x'.

Reorder the terms:
3 + 8x + -5x2 + -14x2 = -8x + 14x2 + 8x + -14x2

Combine like terms: -5x2 + -14x2 = -19x2
3 + 8x + -19x2 = -8x + 14x2 + 8x + -14x2

Reorder the terms:
3 + 8x + -19x2 = -8x + 8x + 14x2 + -14x2

Combine like terms: -8x + 8x = 0
3 + 8x + -19x2 = 0 + 14x2 + -14x2
3 + 8x + -19x2 = 14x2 + -14x2

Combine like terms: 14x2 + -14x2 = 0
3 + 8x + -19x2 = 0

Begin completing the square.  Divide all terms by
-19 the coefficient of the squared term: 

Divide each side by '-19'.
-0.1578947368 + -0.4210526316x + x2 = 0

Move the constant term to the right:

Add '0.1578947368' to each side of the equation.
-0.1578947368 + -0.4210526316x + 0.1578947368 + x2 = 0 + 0.1578947368

Reorder the terms:
-0.1578947368 + 0.1578947368 + -0.4210526316x + x2 = 0 + 0.1578947368

Combine like terms: -0.1578947368 + 0.1578947368 = 0.0000000000
0.0000000000 + -0.4210526316x + x2 = 0 + 0.1578947368
-0.4210526316x + x2 = 0 + 0.1578947368

Combine like terms: 0 + 0.1578947368 = 0.1578947368
-0.4210526316x + x2 = 0.1578947368

The x term is -0.4210526316x.  Take half its coefficient (-0.2105263158).
Square it (0.04432132964) and add it to both sides.

Add '0.04432132964' to each side of the equation.
-0.4210526316x + 0.04432132964 + x2 = 0.1578947368 + 0.04432132964

Reorder the terms:
0.04432132964 + -0.4210526316x + x2 = 0.1578947368 + 0.04432132964

Combine like terms: 0.1578947368 + 0.04432132964 = 0.20221606644
0.04432132964 + -0.4210526316x + x2 = 0.20221606644

Factor a perfect square on the left side:
(x + -0.2105263158)(x + -0.2105263158) = 0.20221606644

Calculate the square root of the right side: 0.449684408

Break this problem into two subproblems by setting 
(x + -0.2105263158) equal to 0.449684408 and -0.449684408.

Subproblem 1

x + -0.2105263158 = 0.449684408 Simplifying x + -0.2105263158 = 0.449684408 Reorder the terms: -0.2105263158 + x = 0.449684408 Solving -0.2105263158 + x = 0.449684408 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2105263158' to each side of the equation. -0.2105263158 + 0.2105263158 + x = 0.449684408 + 0.2105263158 Combine like terms: -0.2105263158 + 0.2105263158 = 0.0000000000 0.0000000000 + x = 0.449684408 + 0.2105263158 x = 0.449684408 + 0.2105263158 Combine like terms: 0.449684408 + 0.2105263158 = 0.6602107238 x = 0.6602107238 Simplifying x = 0.6602107238

Subproblem 2

x + -0.2105263158 = -0.449684408 Simplifying x + -0.2105263158 = -0.449684408 Reorder the terms: -0.2105263158 + x = -0.449684408 Solving -0.2105263158 + x = -0.449684408 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2105263158' to each side of the equation. -0.2105263158 + 0.2105263158 + x = -0.449684408 + 0.2105263158 Combine like terms: -0.2105263158 + 0.2105263158 = 0.0000000000 0.0000000000 + x = -0.449684408 + 0.2105263158 x = -0.449684408 + 0.2105263158 Combine like terms: -0.449684408 + 0.2105263158 = -0.2391580922 x = -0.2391580922 Simplifying x = -0.2391580922

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.6602107238, -0.2391580922}

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