-2x(x-3)=4x-3

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


Simplifying
-2x(x + -3) = 4x + -3

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

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

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

Solving for variable 'x'.

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

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

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

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

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

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

Divide each side by '-2'.
-1.5 + -1x + x2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + -1x + 1.5 + x2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + -1x + x2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -1x + x2 = 0 + 1.5
-1x + x2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
-1x + x2 = 1.5

The x term is -1x.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = 1.5 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 1.5 + 0.25

Combine like terms: 1.5 + 0.25 = 1.75
0.25 + -1x + x2 = 1.75

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 1.75

Calculate the square root of the right side: 1.322875656

Break this problem into two subproblems by setting 
(x + -0.5) equal to 1.322875656 and -1.322875656.

Subproblem 1

x + -0.5 = 1.322875656 Simplifying x + -0.5 = 1.322875656 Reorder the terms: -0.5 + x = 1.322875656 Solving -0.5 + x = 1.322875656 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 1.322875656 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 1.322875656 + 0.5 x = 1.322875656 + 0.5 Combine like terms: 1.322875656 + 0.5 = 1.822875656 x = 1.822875656 Simplifying x = 1.822875656

Subproblem 2

x + -0.5 = -1.322875656 Simplifying x + -0.5 = -1.322875656 Reorder the terms: -0.5 + x = -1.322875656 Solving -0.5 + x = -1.322875656 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -1.322875656 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -1.322875656 + 0.5 x = -1.322875656 + 0.5 Combine like terms: -1.322875656 + 0.5 = -0.822875656 x = -0.822875656 Simplifying x = -0.822875656

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.822875656, -0.822875656}

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