2x(2x+2)=3(x+2)

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Solution for 2x(2x+2)=3(x+2) equation:


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

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

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

Solving
4x + 4x2 = 6 + 3x

Solving for variable 'x'.

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

Combine like terms: 4x + -3x = 1x
-6 + 1x + 4x2 = 6 + 3x + -6 + -3x

Reorder the terms:
-6 + 1x + 4x2 = 6 + -6 + 3x + -3x

Combine like terms: 6 + -6 = 0
-6 + 1x + 4x2 = 0 + 3x + -3x
-6 + 1x + 4x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
-6 + 1x + 4x2 = 0

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

Divide each side by '4'.
-1.5 + 0.25x + x2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + 0.25x + 1.5 + x2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + 0.25x + x2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + 0.25x + x2 = 0 + 1.5
0.25x + x2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
0.25x + x2 = 1.5

The x term is 0.25x.  Take half its coefficient (0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
0.25x + 0.015625 + x2 = 1.5 + 0.015625

Reorder the terms:
0.015625 + 0.25x + x2 = 1.5 + 0.015625

Combine like terms: 1.5 + 0.015625 = 1.515625
0.015625 + 0.25x + x2 = 1.515625

Factor a perfect square on the left side:
(x + 0.125)(x + 0.125) = 1.515625

Calculate the square root of the right side: 1.231107225

Break this problem into two subproblems by setting 
(x + 0.125) equal to 1.231107225 and -1.231107225.

Subproblem 1

x + 0.125 = 1.231107225 Simplifying x + 0.125 = 1.231107225 Reorder the terms: 0.125 + x = 1.231107225 Solving 0.125 + x = 1.231107225 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.125' to each side of the equation. 0.125 + -0.125 + x = 1.231107225 + -0.125 Combine like terms: 0.125 + -0.125 = 0.000 0.000 + x = 1.231107225 + -0.125 x = 1.231107225 + -0.125 Combine like terms: 1.231107225 + -0.125 = 1.106107225 x = 1.106107225 Simplifying x = 1.106107225

Subproblem 2

x + 0.125 = -1.231107225 Simplifying x + 0.125 = -1.231107225 Reorder the terms: 0.125 + x = -1.231107225 Solving 0.125 + x = -1.231107225 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.125' to each side of the equation. 0.125 + -0.125 + x = -1.231107225 + -0.125 Combine like terms: 0.125 + -0.125 = 0.000 0.000 + x = -1.231107225 + -0.125 x = -1.231107225 + -0.125 Combine like terms: -1.231107225 + -0.125 = -1.356107225 x = -1.356107225 Simplifying x = -1.356107225

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.106107225, -1.356107225}

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