3x-1-2x(x-3)=0

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Solution for 3x-1-2x(x-3)=0 equation:


Simplifying
3x + -1 + -2x(x + -3) = 0

Reorder the terms:
3x + -1 + -2x(-3 + x) = 0
3x + -1 + (-3 * -2x + x * -2x) = 0
3x + -1 + (6x + -2x2) = 0

Reorder the terms:
-1 + 3x + 6x + -2x2 = 0

Combine like terms: 3x + 6x = 9x
-1 + 9x + -2x2 = 0

Solving
-1 + 9x + -2x2 = 0

Solving for variable 'x'.

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

Divide each side by '-2'.
0.5 + -4.5x + x2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + -4.5x + -0.5 + x2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + -4.5x + x2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + -4.5x + x2 = 0 + -0.5
-4.5x + x2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
-4.5x + x2 = -0.5

The x term is -4.5x.  Take half its coefficient (-2.25).
Square it (5.0625) and add it to both sides.

Add '5.0625' to each side of the equation.
-4.5x + 5.0625 + x2 = -0.5 + 5.0625

Reorder the terms:
5.0625 + -4.5x + x2 = -0.5 + 5.0625

Combine like terms: -0.5 + 5.0625 = 4.5625
5.0625 + -4.5x + x2 = 4.5625

Factor a perfect square on the left side:
(x + -2.25)(x + -2.25) = 4.5625

Calculate the square root of the right side: 2.136000936

Break this problem into two subproblems by setting 
(x + -2.25) equal to 2.136000936 and -2.136000936.

Subproblem 1

x + -2.25 = 2.136000936 Simplifying x + -2.25 = 2.136000936 Reorder the terms: -2.25 + x = 2.136000936 Solving -2.25 + x = 2.136000936 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = 2.136000936 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = 2.136000936 + 2.25 x = 2.136000936 + 2.25 Combine like terms: 2.136000936 + 2.25 = 4.386000936 x = 4.386000936 Simplifying x = 4.386000936

Subproblem 2

x + -2.25 = -2.136000936 Simplifying x + -2.25 = -2.136000936 Reorder the terms: -2.25 + x = -2.136000936 Solving -2.25 + x = -2.136000936 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = -2.136000936 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = -2.136000936 + 2.25 x = -2.136000936 + 2.25 Combine like terms: -2.136000936 + 2.25 = 0.113999064 x = 0.113999064 Simplifying x = 0.113999064

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.386000936, 0.113999064}

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