(x^2+4x+4)-(4x^2-8x+5)=

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Solution for (x^2+4x+4)-(4x^2-8x+5)= equation:


Simplifying
(x2 + 4x + 4) + -1(4x2 + -8x + 5) = 0

Reorder the terms:
(4 + 4x + x2) + -1(4x2 + -8x + 5) = 0

Remove parenthesis around (4 + 4x + x2)
4 + 4x + x2 + -1(4x2 + -8x + 5) = 0

Reorder the terms:
4 + 4x + x2 + -1(5 + -8x + 4x2) = 0
4 + 4x + x2 + (5 * -1 + -8x * -1 + 4x2 * -1) = 0
4 + 4x + x2 + (-5 + 8x + -4x2) = 0

Reorder the terms:
4 + -5 + 4x + 8x + x2 + -4x2 = 0

Combine like terms: 4 + -5 = -1
-1 + 4x + 8x + x2 + -4x2 = 0

Combine like terms: 4x + 8x = 12x
-1 + 12x + x2 + -4x2 = 0

Combine like terms: x2 + -4x2 = -3x2
-1 + 12x + -3x2 = 0

Solving
-1 + 12x + -3x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
0.3333333333 + -4x + x2 = 0

Move the constant term to the right:

Add '-0.3333333333' to each side of the equation.
0.3333333333 + -4x + -0.3333333333 + x2 = 0 + -0.3333333333

Reorder the terms:
0.3333333333 + -0.3333333333 + -4x + x2 = 0 + -0.3333333333

Combine like terms: 0.3333333333 + -0.3333333333 = 0.0000000000
0.0000000000 + -4x + x2 = 0 + -0.3333333333
-4x + x2 = 0 + -0.3333333333

Combine like terms: 0 + -0.3333333333 = -0.3333333333
-4x + x2 = -0.3333333333

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = -0.3333333333 + 4

Reorder the terms:
4 + -4x + x2 = -0.3333333333 + 4

Combine like terms: -0.3333333333 + 4 = 3.6666666667
4 + -4x + x2 = 3.6666666667

Factor a perfect square on the left side:
(x + -2)(x + -2) = 3.6666666667

Calculate the square root of the right side: 1.914854216

Break this problem into two subproblems by setting 
(x + -2) equal to 1.914854216 and -1.914854216.

Subproblem 1

x + -2 = 1.914854216 Simplifying x + -2 = 1.914854216 Reorder the terms: -2 + x = 1.914854216 Solving -2 + x = 1.914854216 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 1.914854216 + 2 Combine like terms: -2 + 2 = 0 0 + x = 1.914854216 + 2 x = 1.914854216 + 2 Combine like terms: 1.914854216 + 2 = 3.914854216 x = 3.914854216 Simplifying x = 3.914854216

Subproblem 2

x + -2 = -1.914854216 Simplifying x + -2 = -1.914854216 Reorder the terms: -2 + x = -1.914854216 Solving -2 + x = -1.914854216 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -1.914854216 + 2 Combine like terms: -2 + 2 = 0 0 + x = -1.914854216 + 2 x = -1.914854216 + 2 Combine like terms: -1.914854216 + 2 = 0.085145784 x = 0.085145784 Simplifying x = 0.085145784

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.914854216, 0.085145784}

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