(2x-3)(2x-3)=56

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Solution for (2x-3)(2x-3)=56 equation:


Simplifying
(2x + -3)(2x + -3) = 56

Reorder the terms:
(-3 + 2x)(2x + -3) = 56

Reorder the terms:
(-3 + 2x)(-3 + 2x) = 56

Multiply (-3 + 2x) * (-3 + 2x)
(-3(-3 + 2x) + 2x * (-3 + 2x)) = 56
((-3 * -3 + 2x * -3) + 2x * (-3 + 2x)) = 56
((9 + -6x) + 2x * (-3 + 2x)) = 56
(9 + -6x + (-3 * 2x + 2x * 2x)) = 56
(9 + -6x + (-6x + 4x2)) = 56

Combine like terms: -6x + -6x = -12x
(9 + -12x + 4x2) = 56

Solving
9 + -12x + 4x2 = 56

Solving for variable 'x'.

Reorder the terms:
9 + -56 + -12x + 4x2 = 56 + -56

Combine like terms: 9 + -56 = -47
-47 + -12x + 4x2 = 56 + -56

Combine like terms: 56 + -56 = 0
-47 + -12x + 4x2 = 0

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

Divide each side by '4'.
-11.75 + -3x + x2 = 0

Move the constant term to the right:

Add '11.75' to each side of the equation.
-11.75 + -3x + 11.75 + x2 = 0 + 11.75

Reorder the terms:
-11.75 + 11.75 + -3x + x2 = 0 + 11.75

Combine like terms: -11.75 + 11.75 = 0.00
0.00 + -3x + x2 = 0 + 11.75
-3x + x2 = 0 + 11.75

Combine like terms: 0 + 11.75 = 11.75
-3x + x2 = 11.75

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 11.75 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 11.75 + 2.25

Combine like terms: 11.75 + 2.25 = 14
2.25 + -3x + x2 = 14

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 14

Calculate the square root of the right side: 3.741657387

Break this problem into two subproblems by setting 
(x + -1.5) equal to 3.741657387 and -3.741657387.

Subproblem 1

x + -1.5 = 3.741657387 Simplifying x + -1.5 = 3.741657387 Reorder the terms: -1.5 + x = 3.741657387 Solving -1.5 + x = 3.741657387 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 3.741657387 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 3.741657387 + 1.5 x = 3.741657387 + 1.5 Combine like terms: 3.741657387 + 1.5 = 5.241657387 x = 5.241657387 Simplifying x = 5.241657387

Subproblem 2

x + -1.5 = -3.741657387 Simplifying x + -1.5 = -3.741657387 Reorder the terms: -1.5 + x = -3.741657387 Solving -1.5 + x = -3.741657387 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -3.741657387 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -3.741657387 + 1.5 x = -3.741657387 + 1.5 Combine like terms: -3.741657387 + 1.5 = -2.241657387 x = -2.241657387 Simplifying x = -2.241657387

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.241657387, -2.241657387}

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