4x(x-3)=11-4x

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Solution for 4x(x-3)=11-4x equation:


Simplifying
4x(x + -3) = 11 + -4x

Reorder the terms:
4x(-3 + x) = 11 + -4x
(-3 * 4x + x * 4x) = 11 + -4x
(-12x + 4x2) = 11 + -4x

Solving
-12x + 4x2 = 11 + -4x

Solving for variable 'x'.

Reorder the terms:
-11 + -12x + 4x + 4x2 = 11 + -4x + -11 + 4x

Combine like terms: -12x + 4x = -8x
-11 + -8x + 4x2 = 11 + -4x + -11 + 4x

Reorder the terms:
-11 + -8x + 4x2 = 11 + -11 + -4x + 4x

Combine like terms: 11 + -11 = 0
-11 + -8x + 4x2 = 0 + -4x + 4x
-11 + -8x + 4x2 = -4x + 4x

Combine like terms: -4x + 4x = 0
-11 + -8x + 4x2 = 0

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

Divide each side by '4'.
-2.75 + -2x + x2 = 0

Move the constant term to the right:

Add '2.75' to each side of the equation.
-2.75 + -2x + 2.75 + x2 = 0 + 2.75

Reorder the terms:
-2.75 + 2.75 + -2x + x2 = 0 + 2.75

Combine like terms: -2.75 + 2.75 = 0.00
0.00 + -2x + x2 = 0 + 2.75
-2x + x2 = 0 + 2.75

Combine like terms: 0 + 2.75 = 2.75
-2x + x2 = 2.75

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = 2.75 + 1

Reorder the terms:
1 + -2x + x2 = 2.75 + 1

Combine like terms: 2.75 + 1 = 3.75
1 + -2x + x2 = 3.75

Factor a perfect square on the left side:
(x + -1)(x + -1) = 3.75

Calculate the square root of the right side: 1.936491673

Break this problem into two subproblems by setting 
(x + -1) equal to 1.936491673 and -1.936491673.

Subproblem 1

x + -1 = 1.936491673 Simplifying x + -1 = 1.936491673 Reorder the terms: -1 + x = 1.936491673 Solving -1 + x = 1.936491673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 1.936491673 + 1 Combine like terms: -1 + 1 = 0 0 + x = 1.936491673 + 1 x = 1.936491673 + 1 Combine like terms: 1.936491673 + 1 = 2.936491673 x = 2.936491673 Simplifying x = 2.936491673

Subproblem 2

x + -1 = -1.936491673 Simplifying x + -1 = -1.936491673 Reorder the terms: -1 + x = -1.936491673 Solving -1 + x = -1.936491673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -1.936491673 + 1 Combine like terms: -1 + 1 = 0 0 + x = -1.936491673 + 1 x = -1.936491673 + 1 Combine like terms: -1.936491673 + 1 = -0.936491673 x = -0.936491673 Simplifying x = -0.936491673

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.936491673, -0.936491673}

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