2(x^2-3x+4)-3x(5x-4)=

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Solution for 2(x^2-3x+4)-3x(5x-4)= equation:


Simplifying
2(x2 + -3x + 4) + -3x(5x + -4) = 0

Reorder the terms:
2(4 + -3x + x2) + -3x(5x + -4) = 0
(4 * 2 + -3x * 2 + x2 * 2) + -3x(5x + -4) = 0
(8 + -6x + 2x2) + -3x(5x + -4) = 0

Reorder the terms:
8 + -6x + 2x2 + -3x(-4 + 5x) = 0
8 + -6x + 2x2 + (-4 * -3x + 5x * -3x) = 0
8 + -6x + 2x2 + (12x + -15x2) = 0

Reorder the terms:
8 + -6x + 12x + 2x2 + -15x2 = 0

Combine like terms: -6x + 12x = 6x
8 + 6x + 2x2 + -15x2 = 0

Combine like terms: 2x2 + -15x2 = -13x2
8 + 6x + -13x2 = 0

Solving
8 + 6x + -13x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-13 the coefficient of the squared term: 

Divide each side by '-13'.
-0.6153846154 + -0.4615384615x + x2 = 0

Move the constant term to the right:

Add '0.6153846154' to each side of the equation.
-0.6153846154 + -0.4615384615x + 0.6153846154 + x2 = 0 + 0.6153846154

Reorder the terms:
-0.6153846154 + 0.6153846154 + -0.4615384615x + x2 = 0 + 0.6153846154

Combine like terms: -0.6153846154 + 0.6153846154 = 0.0000000000
0.0000000000 + -0.4615384615x + x2 = 0 + 0.6153846154
-0.4615384615x + x2 = 0 + 0.6153846154

Combine like terms: 0 + 0.6153846154 = 0.6153846154
-0.4615384615x + x2 = 0.6153846154

The x term is -0.4615384615x.  Take half its coefficient (-0.2307692308).
Square it (0.05325443788) and add it to both sides.

Add '0.05325443788' to each side of the equation.
-0.4615384615x + 0.05325443788 + x2 = 0.6153846154 + 0.05325443788

Reorder the terms:
0.05325443788 + -0.4615384615x + x2 = 0.6153846154 + 0.05325443788

Combine like terms: 0.6153846154 + 0.05325443788 = 0.66863905328
0.05325443788 + -0.4615384615x + x2 = 0.66863905328

Factor a perfect square on the left side:
(x + -0.2307692308)(x + -0.2307692308) = 0.66863905328

Calculate the square root of the right side: 0.817703524

Break this problem into two subproblems by setting 
(x + -0.2307692308) equal to 0.817703524 and -0.817703524.

Subproblem 1

x + -0.2307692308 = 0.817703524 Simplifying x + -0.2307692308 = 0.817703524 Reorder the terms: -0.2307692308 + x = 0.817703524 Solving -0.2307692308 + x = 0.817703524 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2307692308' to each side of the equation. -0.2307692308 + 0.2307692308 + x = 0.817703524 + 0.2307692308 Combine like terms: -0.2307692308 + 0.2307692308 = 0.0000000000 0.0000000000 + x = 0.817703524 + 0.2307692308 x = 0.817703524 + 0.2307692308 Combine like terms: 0.817703524 + 0.2307692308 = 1.0484727548 x = 1.0484727548 Simplifying x = 1.0484727548

Subproblem 2

x + -0.2307692308 = -0.817703524 Simplifying x + -0.2307692308 = -0.817703524 Reorder the terms: -0.2307692308 + x = -0.817703524 Solving -0.2307692308 + x = -0.817703524 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2307692308' to each side of the equation. -0.2307692308 + 0.2307692308 + x = -0.817703524 + 0.2307692308 Combine like terms: -0.2307692308 + 0.2307692308 = 0.0000000000 0.0000000000 + x = -0.817703524 + 0.2307692308 x = -0.817703524 + 0.2307692308 Combine like terms: -0.817703524 + 0.2307692308 = -0.5869342932 x = -0.5869342932 Simplifying x = -0.5869342932

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.0484727548, -0.5869342932}

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